It’s Elemental!

 

Elements of the Periodic Table

 

Symbol                                  Element                     Atomic Number

Ac                               Actinium                   89

 

http://www.scescape.net/~woods/elements/actinium.html#top

 

http://environmentalchemistry.com/yogi/periodic/Ac.html

 

http://pearl1.lanl.gov/periodic/elements/89.html

 

 

Al                                Aluminum                 13

 

http://pearl1.lanl.gov/periodic/elements/89.html

 

http://education.jlab.org/itselemental/ele013.html

 

http://www.chemicalelements.com/elements/al.html

 

 

Am                              Americium                95

 

http://pearl1.lanl.gov/periodic/elements/95.html

 

http://www.webelements.com/webelements/elements/text/Am/key.html

 

http://www.scescape.net/~woods/elements/americium.html

 

Sb                               Antimony                  51

 

http://www.webelements.com/webelements/elements/text/Sb/key.html

 

http://minerals.usgs.gov/minerals/pubs/commodity/antimony/

 

http://pearl1.lanl.gov/periodic/elements/51.html

 

Ar                                Argon                                    18

 

http://education.jlab.org/itselemental/ele018.html

 

http://www.webelements.com/webelements/elements/text/Ar/key.html

 

http://environmentalchemistry.com/yogi/periodic/Ar.html

 

As                               Arsenic                                  33

 

http://www.qivx.com/ispt/elements/ptw_033.php

 

http://www.webelements.com/webelements/elements/text/As/key.html

 

http://pearl1.lanl.gov/periodic/elements/33.html

 

At                                Astatine                     85

 

http://www.webelements.com/webelements/elements/text/At/key.html

 

http://pearl1.lanl.gov/periodic/elements/85.html

 

http://education.jlab.org/itselemental/ele085.html

 

Ba                               Barium                                  56

 

http://www.chemsoc.org/viselements/pages/barium.html

 

http://www.webelements.com/webelements/elements/text/Ba/key.html

 

http://www.chemsoc.org/viselements/pages/data/barium_data.html

 

Bk                               Berkelium                 97

 

http://www.chemsoc.org/viselements/pages/berkelium.html

 

http://environmentalchemistry.com/yogi/periodic/Bk.html

 

http://nautilus.fis.uc.pt/st2.5/scenes-e/elem/e09700.html

 

Be                               Beryllium                  4

 

http://www.webelements.com/webelements/elements/text/Be/key.html

 

http://pearl1.lanl.gov/periodic/elements/4.html

 

http://www.atsdr.cdc.gov/tfacts4.html

 

Bi                                Bismuth                    83

 

http://pearl1.lanl.gov/periodic/elements/83.html

 

http://www.webelements.com/webelements/elements/text/Bi/key.html

 

http://www.scescape.net/~woods/elements/bismuth.html

 

B                                 Boron                                    5

 

http://www.webelements.com/webelements/elements/text/B/key.html

 

http://www.chemsoc.org/viselements/pages/boron.html

 

http://pearl1.lanl.gov/periodic/elements/5.html

 

Br                                Bromine                    35

 

http://www.webelements.com/webelements/elements/text/Br/key.html

 

http://www.scescape.net/~woods/elements/bromine.html

 

http://pearl1.lanl.gov/periodic/elements/35.html

 

Cd                               Cadmium                  48

 

http://www.webelements.com/webelements/elements/text/Cd/key.html

 

http://www.scescape.net/~woods/elements/cadmium.html

 

http://pearl1.lanl.gov/periodic/elements/48.html

 

Ca                               Calcium                     20

 

http://education.jlab.org/itselemental/ele020.html

 

http://www.vcs.ethz.ch/chemglobe/ptoe/_/20.html

 

http://www.webelements.com/webelements/elements/text/Ca/key.html

 

http://pearl1.lanl.gov/periodic/elements/20.html

 

Cf                                Californium              98

 

http://education.jlab.org/itselemental/ele098.html

 

http://www.vcs.ethz.ch/chemglobe/ptoe/_/98.html

 

http://pearl1.lanl.gov/periodic/elements/98.html

 

C                                 Carbon                                  6

 

http://education.jlab.org/itselemental/ele006.html

 

http://www.webelements.com/webelements/elements/text/C/key.html

 

http://www.chemsoc.org/viselements/pages/carbon.html

 

Ce                               Cerium                                  58

 

http://www.webelements.com/webelements/elements/text/Ce/key.html

 

http://www.scescape.net/~woods/elements/cerium.html

 

http://education.jlab.org/itselemental/ele058.html

 

Cs                               Cesium                                  55

 

http://www.webelements.com/webelements/elements/text/Cs/key.html

 

http://pearl1.lanl.gov/periodic/elements/55.html

 

http://www.scescape.net/~woods/elements/cesium.html

 

Cl                                Chlorine                    17

 

http://education.jlab.org/itselemental/ele017.html

 

http://pearl1.lanl.gov/periodic/elements/17.html

 

http://www.lenntech.com/Periodic-chart-elements/Cl-en.htm

 

Cr                                Chromium                24

 

http://www.webelements.com/webelements/elements/text/Cr/key.html

 

http://pearl1.lanl.gov/periodic/elements/24.html

 

http://education.jlab.org/itselemental/ele024.html

 

Co                               Cobalt                                    27

 

http://education.jlab.org/itselemental/ele027.html

 

http://www.webelements.com/webelements/elements/text/Co/key.html

 

http://www.nrc-cnrc.gc.ca/randd/education/elements/el/co_e.html

 

Cu                               Copper                      29

 

http://education.jlab.org/itselemental/ele029.html

 

http://environmentalchemistry.com/yogi/periodic/Cu.html

 

http://www.bartleby.com/65/co/copper.html

 

Cm                              Curium                                  96

 

http://education.jlab.org/itselemental/ele096.html

 

http://www.scescape.net/~woods/elements/curium.html

 

http://pearl1.lanl.gov/periodic/elements/96.html

 

Dy                               Dysprosium             66

 

http://www.webelements.com/webelements/elements/text/Dy/key.html

 

http://pearl1.lanl.gov/periodic/elements/66.html

 

http://environmentalchemistry.com/yogi/periodic/Dy.html

 

Es                               Einsteinium              99

 

http://www.scescape.net/~woods/elements/einsteinium.html

 

http://education.jlab.org/itselemental/ele099.html

 

http://pearl1.lanl.gov/periodic/elements/99.html

 

Er                                Erbium                      68

 

http://www.webelements.com/webelements/elements/text/Er/key.html

 

http://education.jlab.org/itselemental/ele068.html

 

http://www.chemsoc.org/viselements/pages/erbium.html

 

Eu                               Europium                 63

 

http://www.webelements.com/webelements/elements/text/Eu/key.html

 

http://www.scescape.net/~woods/elements/europium.html

 

http://education.jlab.org/itselemental/ele063.html

 

Fm                              Fermium                   100

 

http://pearl1.lanl.gov/periodic/elements/100.html

 

http://www.scescape.net/~woods/elements/fermium.html

 

http://education.jlab.org/itselemental/ele100.html

 

F                                  Fluorine                    9

 

http://pearl1.lanl.gov/periodic/elements/9.html

 

http://www.scescape.net/~woods/elements/fluorine.html

 

http://www.sanjuan.edu/schools/arcade/F1.html

 

Fr                                Francium                  87

 

http://www.webelements.com/webelements/elements/text/Fr/key.html

 

http://pearl1.lanl.gov/periodic/elements/87.html

 

http://www.scescape.net/~woods/elements/francium.html

 

Gd                               Gadolinium              64

 

http://www.webelements.com/webelements/elements/text/Gd/key.html

 

http://www.scescape.net/~woods/elements/gadolinium.html

 

http://www.corrosionsource.com/handbook/periodic/64.htm

 

Ga                               Gallium                      31

 

http://www.webelements.com/webelements/elements/text/Ga/key.html

 

http://pearl1.lanl.gov/periodic/elements/31.html

 

http://www.scescape.net/~woods/elements/gallium.html

 

Ge                               Germanium              32

 

http://www.webelements.com/webelements/elements/text/Ge/key.html

 

http://www.scescape.net/~woods/elements/germanium.html

 

http://pearl1.lanl.gov/periodic/elements/32.html

 

Au                               Gold                           79

 

http://www.webelements.com/webelements/elements/text/Au/key.html

 

http://education.jlab.org/itselemental/ele079.html

 

http://environmentalchemistry.com/yogi/periodic/Au.html

 

Hf                                Hafnium                    72

 

http://www.webelements.com/webelements/elements/text/Hf/key.html

 

http://www.scescape.net/~woods/elements/hafnium.html

 

http://pearl1.lanl.gov/periodic/elements/72.html

 

Ha                               Hahnium                   105

 

http://pearl1.lanl.gov/periodic/elements/105.html

 

http://www.pmel.org/HandBook/PeriodicTable/105.htm

 

http://www.principalmetals.com/utilities/105.htm

 

Hs                               Hassium                   108

 

http://www.lbl.gov/Science-Articles/Archive/108-chemistry.html

 

http://www.webelements.com/webelements/elements/text/Hs/key.html

 

http://education.jlab.org/itselemental/ele108.html

 

He                               Helium                                   2

 

http://www.webelements.com/webelements/elements/text/He/key.html

 

http://education.jlab.org/itselemental/ele002.html

 

http://pearl1.lanl.gov/periodic/elements/2.html

 

Ho                               Holmium                   67

 

http://www.webelements.com/webelements/elements/text/Ho/key.html

 

http://education.jlab.org/itselemental/ele067.html

 

http://pearl1.lanl.gov/periodic/elements/67.html

 

H                                 Hydrogen                 1

 

http://education.jlab.org/itselemental/ele001.html

 

http://www.chemicalelements.com/elements/h.html

 

http://pearl1.lanl.gov/periodic/elements/1.html

 

In                                 Indium                                   49

 

http://www.webelements.com/webelements/elements/text/In/key.html

 

http://www.scescape.net/~woods/elements/indium.html

 

http://pearl1.lanl.gov/periodic/elements/49.html

 

I                                   Iodine                                    53

 

http://www.vcs.ethz.ch/chemglobe/ptoe/_/53.html

 

http://www.chemsoc.org/viselements/pages/iodine.html

 

http://pubs.acs.org/cen/80th/print/iodine.html

 

Ir                                  Iridium                                   77

 

http://www.webelements.com/webelements/elements/text/Ir/key.html

 

http://pearl1.lanl.gov/periodic/elements/77.html

 

http://www.scescape.net/~woods/elements/iridium.html

 

Fe                               Iron                             26

 

http://education.jlab.org/itselemental/ele026.html

 

http://www.chemicalelements.com/elements/fe.html

 

http://www.chemsoc.org/viselements/pages/iron.html

 

http://www.webelements.com/webelements/elements/text/Fe/key.html

 

Kr                                Krypton                     36

 

http://education.jlab.org/itselemental/ele036.html

 

http://environmentalchemistry.com/yogi/periodic/Kr.html

 

http://www.ktf-split.hr/periodni/en/kr.html

 

http://www.britannica.com/nobel/micro/329_89.html

 

La                               Lanthanum              57

 

http://www.scescape.net/~woods/elements/lanthanum.html

 

http://pearl1.lanl.gov/periodic/elements/57.html

 

http://www.webelements.com/webelements/elements/text/La/key.html

 

Lr                                Lawrencium             103

 

http://www.chemsoc.org/viselements/pages/lawrencium.html

 

http://pearl1.lanl.gov/periodic/elements/103.html

 

http://encyclopedia.thefreedictionary.com/Element%20103

 

Pb                               Lead                           82

 

http://education.jlab.org/itselemental/ele082.html

 

http://library.thinkquest.org/10676/Period/pb.html?tqskip1=1

 

http://www.radiochemistry.org/periodictable/elements/82.html

 

Li                                 Lithium                                  3

 

http://www.webelements.com/webelements/elements/text/Li/key.html

 

http://pearl1.lanl.gov/periodic/elements/3.html

 

http://environmentalchemistry.com/yogi/periodic/Li.html

 

Lu                               Lutetium                   71

 

http://pearl1.lanl.gov/periodic/elements/71.html

 

http://www.scescape.net/~woods/elements/lutetium.html

 

http://education.jlab.org/itselemental/ele071.html

 

Mg                              Magnesium              12

 

http://www.chemsoc.org/viselements/pages/magnesium.html

 

http://www.webelements.com/webelements/elements/text/Mg/key.html

 

http://education.jlab.org/itselemental/ele012.html

 

Mn                              Manganese              25

 

http://pearl1.lanl.gov/periodic/elements/25.html

 

http://www.webelements.com/webelements/elements/text/Mn/key.html

 

http://www.scescape.net/~woods/elements/manganese.html

 

Mt                                Meitnerium               109

 

http://www.webelements.com/webelements/elements/text/Mt/key.html

 

http://education.jlab.org/itselemental/ele109.html

 

http://www.scescape.net/~woods/elements/meitnerium.html

 

Md                              Mendelevium                       101

 

http://pearl1.lanl.gov/periodic/elements/101.html

 

http://www.scescape.net/~woods/elements/mendelevium.html

 

http://www.britannica.com/nobel/micro/386_87.html

 

Hg                               Mercury                     80

 

http://www.fact-index.com/m/me/mercury__element__1.html

 

http://education.jlab.org/itselemental/ele080.html

 

http://www.webelements.com/webelements/elements/text/Hg/key.html

 

Mo                              Molybdenum                       42

 

http://www.webelements.com/webelements/elements/text/Mo/key.html

 

http://pearl1.lanl.gov/periodic/elements/42.html

 

http://www.scescape.net/~woods/elements/molybdenum.html

 

Ns                               Neilsborium             107

 

http://www.principalmetals.com/utilities/107.htm

 

http://www.pmel.org/HandBook/PeriodicTable/107.htm

 

http://neon.mems.cmu.edu/27201/periodic/107.html

 

Nd                               Neodymium             60

 

http://www.webelements.com/webelements/elements/text/Nd/key.html

 

http://pearl1.lanl.gov/periodic/elements/60.html

 

http://www.corrosionsource.com/handbook/periodic/60.htm

 

Ne                               Neon                          10

 

http://education.jlab.org/itselemental/ele010.html

 

http://www.vcs.ethz.ch/chemglobe/ptoe/_/10.html

 

http://www.webelements.com/webelements/elements/text/Ne/key.html

 

Np                               Neptunium               93

 

http://pearl1.lanl.gov/periodic/elements/93.html

 

http://www.scescape.net/~woods/elements/neptunium.html

 

http://education.jlab.org/itselemental/ele093.html

 

Ni                                Nickel                                    28

 

http://www.chemicalelements.com/elements/ni.html

 

http://education.jlab.org/itselemental/ele028.html

 

http://www.nrc-cnrc.gc.ca/randd/education/elements/el/ni_e.html

 

Nb                               Niobium                    41

 

http://www.webelements.com/webelements/elements/text/Nb/key.html

 

http://www.scescape.net/~woods/elements/niobium.html

 

http://www.vcs.ethz.ch/chemglobe/ptoe/_/41.html

 

N                                 Nitrogen                    7

 

http://education.jlab.org/itselemental/ele007.html

 

http://environmentalchemistry.com/yogi/periodic/N.html

 

http://pearl1.lanl.gov/periodic/elements/7.html

 

No                               Nobelium                  102

 

http://education.jlab.org/itselemental/ele102.html

 

http://pearl1.lanl.gov/periodic/elements/102.html

 

http://www.scescape.net/~woods/elements/nobelium.html

 

Os                               Osmium                    76

 

http://www.webelements.com/webelements/elements/text/Os/key.html

 

http://www.scescape.net/~woods/elements/osmium.html

 

http://education.jlab.org/itselemental/ele076.html

 

O                                 Oxygen                     8

 

http://education.jlab.org/itselemental/ele008.html

 

http://www.webelements.com/webelements/elements/text/O/key.html

 

http://www.chemsoc.org/viselements/pages/oxygen.html

 

Pd                               Palladium                 46

 

http://education.jlab.org/itselemental/ele046.html

 

http://environmentalchemistry.com/yogi/periodic/Pd.html

 

http://www.vcs.ethz.ch/chemglobe/ptoe/_/46t.html

 

P                                 Phosphorus                        15

 

http://education.jlab.org/itselemental/ele015.html

 

http://www.vcs.ethz.ch/chemglobe/ptoe/_/15.html

 

http://environmentalchemistry.com/yogi/periodic/P.html

 

Pt                                Platinum                   78

 

http://education.jlab.org/itselemental/ele078.html

 

http://www.webelements.com/webelements/elements/text/Pt/key.html

 

http://mineral.galleries.com/minerals/elements/platinum/platinum.htm

 

Pu                               Plutonium                 94

 

http://www.webelements.com/webelements/elements/text/Pu/key.html

 

http://education.jlab.org/itselemental/ele094.html

 

http://environmentalchemistry.com/yogi/periodic/Pu.html

 

Po                               Plolnium                   84

 

http://www.webelements.com/webelements/elements/text/Po/key.html

 

http://pearl1.lanl.gov/periodic/elements/84.html

 

http://www.scescape.net/~woods/elements/polonium.html

 

K                                 Potassium                19

 

http://www.webelements.com/webelements/elements/text/K/key.html

 

http://education.jlab.org/itselemental/ele019.html

 

http://environmentalchemistry.com/yogi/periodic/K.html

 

Pr                                Praseodymium                   59

 

http://www.webelements.com/webelements/elements/text/Pr/key.html

 

http://www.scescape.net/~woods/elements/praseodymium.html

 

http://pearl1.lanl.gov/periodic/elements/59.html

 

Pm                              Promethium             61

 

http://www.webelements.com/webelements/elements/text/Pm/key.html

 

http://www.scescape.net/~woods/elements/promethium.html

 

http://pearl1.lanl.gov/periodic/elements/61.html

 

Pa                               Protactinium                        91

 

http://pearl1.lanl.gov/periodic/elements/91.html

 

http://www.scescape.net/~woods/elements/protactinium.html

 

http://education.jlab.org/itselemental/ele091.html

 

Ra                               Radium                                 88

 

http://www.webelements.com/webelements/elements/text/Ra/key.html

 

http://education.jlab.org/itselemental/ele088.html

 

http://www.chemsoc.org/viselements/pages/data/radium_data.html

 

Rn                               Radon                                   86

 

http://www.webelements.com/webelements/elements/text/Rn/key.html

 

http://education.jlab.org/itselemental/ele086.html

 

http://www.tamuk.edu/chemistry/WebElements/radon_element.htm

 

Re                               Rhenium                   75

 

http://www.chemsoc.org/viselements/pages/rhenium.html

 

http://education.jlab.org/itselemental/ele075.html

 

http://environmentalchemistry.com/yogi/periodic/Re.html

 

Rh                               Rhodium                   45

 

http://www.webelements.com/webelements/elements/text/Rh/key.html

 

http://pearl1.lanl.gov/periodic/elements/45.html

 

http://www.scescape.net/~woods/elements/rhodium.html

 

Rb                               Rubidium                  37

 

http://www.webelements.com/webelements/elements/text/Rb/key.html

 

http://pearl1.lanl.gov/periodic/elements/37.html

 

http://www.scescape.net/~woods/elements/rubidium.html

 

Ru                               Ruthenium               44

 

http://www.webelements.com/webelements/elements/text/Ru/key.html

 

http://www.scescape.net/~woods/elements/ruthenium.html

 

http://pearl1.lanl.gov/periodic/elements/44.html

 

Rf                                Rutherfordium                    104

 

http://education.jlab.org/itselemental/ele104.html

 

http://pearl1.lanl.gov/periodic/elements/104.html

 

http://www.scescape.net/~woods/elements/rutherfordium.html

 

Sm                              Samarium                 62

 

http://www.webelements.com/webelements/elements/text/Sm/key.html

 

http://www.scescape.net/~woods/elements/samarium.html

 

http://education.jlab.org/itselemental/ele062.html

 

Sc                               Scandium                 21

 

http://www.scescape.net/~woods/elements/scandium.html

 

http://pearl1.lanl.gov/periodic/elements/21.html

 

http://www.webelements.com/webelements/elements/text/Sc/key.html

 

Sg                               Seaborgium             106

 

http://pearl1.lanl.gov/periodic/elements/106.html

 

http://education.jlab.org/itselemental/ele106.html

 

http://seaborg.nmu.edu/gts/seaborgium.html

 

Se                               Selenium                  34

 

http://www.cc.nih.gov/ccc/supplements/selen.html

 

http://www.webelements.com/webelements/elements/text/Se/key.html

 

http://www.scescape.net/~woods/elements/selenium.html

 

Si                                Silicon                       14

 

http://education.jlab.org/itselemental/ele014.html

 

http://www.sciencelab.com/data/elements/Si.shtml

 

http://www.webelements.com/webelements/elements/text/Si/key.html

 

Ag                               Silver                         47

 

http://education.jlab.org/itselemental/ele047.html

 

http://www.nrc-cnrc.gc.ca/randd/education/elements/el/ag_e.html

 

http://www.edinburghgeolsoc.org/z_38_02.html

 

Na                               Sodium                     11

 

http://education.jlab.org/itselemental/ele011.html

 

http://www.chemsoc.org/viselements/pages/sodium.html

 

http://environmentalchemistry.com/yogi/periodic/Na.html

 

Sr                                Strontium                 38

 

http://education.jlab.org/itselemental/ele038.html

 

http://environmentalchemistry.com/yogi/periodic/Sr.html

 

http://www.chemsoc.org/viselements/pages/data/strontium_data.html

 

S                                 Sulfur                         16

 

http://www.chemsoc.org/viselements/pages/sulfur.html

 

http://education.jlab.org/itselemental/ele016.html

 

http://www.chem4kids.com/files/elements/016_where.html

 

Ta                               Tantalum                  73

 

http://education.jlab.org/itselemental/ele073.html

 

http://www.vcs.ethz.ch/chemglobe/ptoe/_/73.html

 

http://www.chemsoc.org/viselements/pages/tantalum.html

 

Tc                               Technetium              43

 

http://education.jlab.org/itselemental/ele043.html

 

http://www.chemsoc.org/viselements/pages/technetium.html

 

http://www.nrc-cnrc.gc.ca/randd/education/elements/el/tc_e.html

 

Te                               Tellurium                  52

 

http://education.jlab.org/itselemental/ele052.html

 

http://www.sciencelab.com/data/elements/Te.shtml

 

http://pearl1.lanl.gov/periodic/elements/52.html

 

Tb                               Terbium                    65

 

http://education.jlab.org/itselemental/ele065.html

 

http://environmentalchemistry.com/yogi/periodic/Tb.html

 

http://www.chemsoc.org/viselements/pages/data/terbium_data.html

 

Tl                                 Thallium                    81

 

http://education.jlab.org/itselemental/ele081.html

 

http://www.chemsoc.org/viselements/pages/data/thallium_data.html

 

http://www.scescape.net/~woods/elements/thallium.html

 

Th                               Thorium                    90

 

http://education.jlab.org/itselemental/ele090.html

 

http://www.chemsoc.org/viselements/pages/data/thorium_data.html

 

http://pearl1.lanl.gov/periodic/elements/90.html

 

Tm                              Thulium                     69

 

http://www.webelements.com/webelements/elements/text/Tm/key.html

 

http://www.chemsoc.org/viselements/pages/thulium.html

 

http://education.jlab.org/itselemental/ele069.html

 

Sn                               Tin                              50

 

http://education.jlab.org/itselemental/ele050.html

 

http://www.radiochemistry.org/periodictable/elements/50.html

 

http://www.chemie.de/web-elements-I/Sn.html

 

Ti                                 Titanium                    22

 

http://pearl1.lanl.gov/periodic/elements/22.html

 

http://education.jlab.org/itselemental/ele022.html

 

http://www.nrc-cnrc.gc.ca/randd/education/elements/el/ti_e.html

 

W                                Tungsten                  74

 

http://education.jlab.org/itselemental/ele074.html

 

http://www.chemsoc.org/viselements/pages/data/tungsten_data.html

 

http://pearl1.lanl.gov/periodic/elements/74.html

 

U                                 Uranium                    92

 

http://pearl1.lanl.gov/periodic/elements/92.html

 

http://www.webelements.com/webelements/elements/text/U/key.html

 

http://education.jlab.org/itselemental/ele092.html

 

V                                 Vanadium                 23

 

http://education.jlab.org/itselemental/ele023.html

 

http://www.chemsoc.org/viselements/pages/data/vanadium_data.html

 

http://pearl1.lanl.gov/periodic/elements/23.html

 

Xi                                Xenon                                    54

 

http://www.webelements.com/webelements/elements/text/Xe/key.html

 

http://education.jlab.org/itselemental/ele054.html

 

http://pearl1.lanl.gov/periodic/elements/54.html

 

Yb                               Ytterbium                  70

 

http://education.jlab.org/itselemental/ele070.html

 

http://environmentalchemistry.com/yogi/periodic/Yb.html

 

http://www.lenntech.com/Periodic-chart-elements/Yb-en.htm

 

Y                                  Yttrium                                   39

 

http://www.chemsoc.org/viselements/pages/yttrium.html

 

http://education.jlab.org/itselemental/ele039.html

 

http://environmentalchemistry.com/yogi/periodic/Y.html

 

Zn                               Zinc                            30

 

http://education.jlab.org/itselemental/ele030.html

 

http://environmentalchemistry.com/yogi/periodic/Zn.html

 

http://chemistry.about.com/library/blzn.htm

 

Zr                                Zirconium                 40

 

http://education.jlab.org/itselemental/ele040.html

 

http://www.chemsoc.org/viselements/pages/zirconium.html

 

http://environmentalchemistry.com/yogi/periodic/Zr.html