actinium A 'mass' thing this a chemical element of symbol Ac, atomic number 89, and atomic weight ()last updated 15 Feb 2015 http://en.wikipedia.org/wiki/Actiniumlast updated 15 Feb 2015
aluminium A 'mass' thing this a chemical element of symbol Al, atomic number 13, and atomic weight 26.98.last updated 15 Feb 2015 http://en.wikipedia.org/wiki/Aluminiumlast updated 15 Feb 2015
aluminum A 'mass' thing this a chemical element of symbol Al, atomic number 13, and atomic weight 26.98.last updated 15 Feb 2015 http://en.wikipedia.org/wiki/Aluminiumlast updated 15 Feb 2015
americium A 'mass' thing this a chemical element of symbol Am, atomic number 95, and atomic weight ().last updated 15 Feb 2015 http://en.wikipedia.org/wiki/Americiumlast updated 15 Feb 2015
antimony A 'mass' thing this a chemical element of symbol Sb, atomic number 51, and atomic weight 121.8.last updated 15 Feb 2015 http://en.wikipedia.org/wiki/Antimonylast updated 15 Feb 2015
argon A 'mass' thing this a chemical element of symbol Ar, atomic number 18, and atomic weight 39.95.last updated 15 Feb 2015 http://en.wikipedia.org/wiki/Argonlast updated 15 Feb 2015
arsenic A 'mass' thing this a chemical element of symbol As, atomic number 33, and atomic weight 74.92.last updated 15 Feb 2015 http://en.wikipedia.org/wiki/Arseniclast updated 15 Feb 2015
astatine A 'mass' thing this a chemical element of symbol At, atomic number 85, and atomic weight ().last updated 15 Feb 2015 http://en.wikipedia.org/wiki/Astatinelast updated 15 Feb 2015
barium A 'mass' thing this a chemical element of symbol Ba, atomic number 56, and atomic weight 137.3.last updated 15 Feb 2015 http://en.wikipedia.org/wiki/Bariumlast updated 15 Feb 2015
berkelium A 'mass' thing this a chemical element of symbol Bk, atomic number 97, and atomic weight ().last updated 15 Feb 2015 http://en.wikipedia.org/wiki/Berkeliumlast updated 15 Feb 2015
beryllium A 'mass' thing this a chemical element of symbol Be, atomic number 4, and atomic weight 9.012.last updated 15 Feb 2015 http://en.wikipedia.org/wiki/Berylliumlast updated 15 Feb 2015
bismuth A 'mass' thing this a chemical element of symbol Bi, atomic number 83, and atomic weight 209.0.last updated 15 Feb 2015 http://en.wikipedia.org/wiki/Bismuthlast updated 15 Feb 2015
bohrium A 'mass' thing this a chemical element of symbol Bh, atomic number 107, and atomic weight ().last updated 15 Feb 2015 http://en.wikipedia.org/wiki/Bohriumlast updated 15 Feb 2015
boron A 'mass' thing this a chemical element of symbol B, atomic number 5, and atomic weight [10.80, 10.83].last updated 15 Feb 2015 http://en.wikipedia.org/wiki/Boronlast updated 15 Feb 2015
bromine A 'mass' thing this a chemical element of symbol Br, atomic number 35, and atomic weight [79.90, 79.91].last updated 15 Feb 2015 http://en.wikipedia.org/wiki/Brominelast updated 15 Feb 2015
cadmium A 'mass' thing this a chemical element of symbol Cd, atomic number 48, and atomic weight 112.4.last updated 15 Feb 2015 http://en.wikipedia.org/wiki/Cadmiumlast updated 15 Feb 2015
caesium A 'mass' thing this a chemical element of symbol Cs, atomic number 55, and atomic weight 132.9.last updated 15 Feb 2015 http://en.wikipedia.org/wiki/Caesiumlast updated 15 Feb 2015
calcium A 'mass' thing this a chemical element of symbol Ca, atomic number 20, and atomic weight 40.08.last updated 15 Feb 2015 http://en.wikipedia.org/wiki/Calciumlast updated 15 Feb 2015
californium A 'mass' thing this a chemical element of symbol Cf, atomic number 98, and atomic weight ().last updated 15 Feb 2015 http://en.wikipedia.org/wiki/Californiumlast updated 15 Feb 2015
carbon A 'mass' thing this a chemical element of symbol C, atomic number 6, and atomic weight [12.00, 12.02].last updated 15 Feb 2015 http://en.wikipedia.org/wiki/Carbonlast updated 15 Feb 2015
cerium A 'mass' thing this a chemical element of symbol Ce, atomic number 58, and atomic weight 140.1.last updated 15 Feb 2015 http://en.wikipedia.org/wiki/Ceriumlast updated 15 Feb 2015
cesium A 'mass' thing this a chemical element of symbol Cs, atomic number 55, and atomic weight 132.9.last updated 15 Feb 2015 http://en.wikipedia.org/wiki/Caesiumlast updated 15 Feb 2015
chlorine A 'mass' thing this a chemical element of symbol Cl, atomic number 17, and atomic weight [35.44, 35.46].last updated 15 Feb 2015 http://en.wikipedia.org/wiki/Chlorinelast updated 15 Feb 2015
chromium A 'mass' thing this a chemical element of symbol Cr, atomic number 24, and atomic weight 52.00.last updated 15 Feb 2015 http://en.wikipedia.org/wiki/Chromiumlast updated 15 Feb 2015
cobalt A 'mass' thing this a chemical element of symbol Co, atomic number 27, and atomic weight 58.93.last updated 15 Feb 2015 http://en.wikipedia.org/wiki/Cobaltlast updated 15 Feb 2015
copernicium A 'mass' thing this a chemical element of symbol Cn, atomic number 112, and atomic weight ().last updated 15 Feb 2015 http://en.wikipedia.org/wiki/Coperniciumlast updated 15 Feb 2015
copper A 'mass' thing this a chemical element of symbol Cu, atomic number 29, and atomic weight (63.55).last updated 15 Feb 2015 http://en.wikipedia.org/wiki/Copperlast updated 15 Feb 2015
curium A 'mass' thing this a chemical element of symbol Cm, atomic number 96, and atomic weight ().last updated 15 Feb 2015 http://en.wikipedia.org/wiki/Curiumlast updated 15 Feb 2015
darmstadtium A 'mass' thing this a chemical element of symbol Ds, atomic number 110, and atomic weight ().last updated 15 Feb 2015 http://en.wikipedia.org/wiki/Darmstadtiumlast updated 15 Feb 2015
dubnium A 'mass' thing this a chemical element of symbol Db, atomic number 105, and atomic weight ().last updated 15 Feb 2015 http://en.wikipedia.org/wiki/Dubniumlast updated 15 Feb 2015
dysprosium A 'mass' thing this a chemical element of symbol Dy, atomic number 66, and atomic weight 162.5.last updated 15 Feb 2015 http://en.wikipedia.org/wiki/Dysprosiumlast updated 15 Feb 2015
einsteinium A 'mass' thing this a chemical element of symbol Es, atomic number 99, and atomic weight ().last updated 15 Feb 2015 http://en.wikipedia.org/wiki/Einsteiniumlast updated 15 Feb 2015
erbium A 'mass' thing this a chemical element of symbol Er, atomic number 68, and atomic weight 167.3.last updated 15 Feb 2015 http://en.wikipedia.org/wiki/Erbiumlast updated 15 Feb 2015
europium A 'mass' thing this a chemical element of symbol Eu, atomic number 63, and atomic weight 152.last updated 15 Feb 2015 http://en.wikipedia.org/wiki/Europiumlast updated 15 Feb 2015
fermium A 'mass' thing this a chemical element of symbol Fm, atomic number 100, and atomic weight ().last updated 15 Feb 2015 http://en.wikipedia.org/wiki/Fermiumlast updated 15 Feb 2015
flerovium A 'mass' thing this a chemical element of symbol Fl, atomic number 114, and atomic weight ().last updated 15 Feb 2015 http://en.wikipedia.org/wiki/Fleroviumlast updated 15 Feb 2015
fluorine A 'mass' thing this a chemical element of symbol F, atomic number 9, and atomic weight 19.00.last updated 15 Feb 2015 http://en.wikipedia.org/wiki/Fluorinelast updated 15 Feb 2015
francium A 'mass' thing this a chemical element of symbol Fr, atomic number 87, and atomic weight ().last updated 15 Feb 2015 http://en.wikipedia.org/wiki/Franciumlast updated 15 Feb 2015
gadolinium A 'mass' thing this a chemical element of symbol Gd, atomic number 64, and atomic weight 157.3.last updated 15 Feb 2015 http://en.wikipedia.org/wiki/Gadoliniumlast updated 15 Feb 2015
gallium A 'mass' thing this a chemical element of symbol Ga, atomic number 31, and atomic weight 69.72.last updated 15 Feb 2015 http://en.wikipedia.org/wiki/Galliumlast updated 15 Feb 2015
germanium A 'mass' thing this a chemical element of symbol Ge, atomic number 32, and atomic weight 72.63.last updated 15 Feb 2015 http://en.wikipedia.org/wiki/Germaniumlast updated 15 Feb 2015
gold A 'mass' thing this a chemical element of symbol Au, atomic number 79, and atomic weight 197.0.last updated 15 Feb 2015 http://en.wikipedia.org/wiki/Goldlast updated 15 Feb 2015
hafnium A 'mass' thing this a chemical element of symbol Hf, atomic number 72, and atomic weight 178.5.last updated 15 Feb 2015 http://en.wikipedia.org/wiki/Hafniumlast updated 15 Feb 2015
hassium A 'mass' thing this a chemical element of symbol Hs, atomic number 108, and atomic weight ().last updated 15 Feb 2015 http://en.wikipedia.org/wiki/Hassiumlast updated 15 Feb 2015
helium A 'mass' thing this a chemical element of symbol He, atomic number 2, and atomic weight 4.003.last updated 15 Feb 2015 http://en.wikipedia.org/wiki/Heliumlast updated 15 Feb 2015
holmium A 'mass' thing this a chemical element of symbol Ho, atomic number 67, and atomic weight 164.9.last updated 15 Feb 2015 http://en.wikipedia.org/wiki/Holmiumlast updated 15 Feb 2015
hydrogen A 'mass' thing this a chemical element of symbol H, atomic number 1, and atomic weight [1.007, 1.009].last updated 15 Feb 2015 http://en.wikipedia.org/wiki/Hydrogenlast updated 15 Feb 2015
indium A 'mass' thing this a chemical element of symbol In, atomic number 49, and atomic weight 114.8.last updated 15 Feb 2015 http://en.wikipedia.org/wiki/Indiumlast updated 15 Feb 2015
iodine A 'mass' thing this a chemical element of symbol I, atomic number 53, and atomic weight 126.9.last updated 15 Feb 2015 http://en.wikipedia.org/wiki/Iodinelast updated 15 Feb 2015
iridium A 'mass' thing this a chemical element of symbol Ir, atomic number 77, and atomic weight 192.2.last updated 15 Feb 2015 http://en.wikipedia.org/wiki/Iridiumlast updated 15 Feb 2015
iron A 'mass' thing this a chemical element of symbol Fe, atomic number 26, and atomic weight 55.85.last updated 15 Feb 2015 http://en.wikipedia.org/wiki/Ironlast updated 15 Feb 2015
krypton A 'mass' thing this a chemical element of symbol Kr, atomic number 36, and atomic weight 83.8.last updated 15 Feb 2015 http://en.wikipedia.org/wiki/Kryptonlast updated 15 Feb 2015
lanthanum A 'mass' thing this a chemical element of symbol La, atomic number 57, and atomic weight 138.9.last updated 15 Feb 2015 http://en.wikipedia.org/wiki/Lanthanumlast updated 15 Feb 2015
lawrencium A 'mass' thing this a chemical element of symbol Lr, atomic number 103, and atomic weight ().last updated 15 Feb 2015 http://en.wikipedia.org/wiki/Lawrenciumlast updated 15 Feb 2015
lead A 'mass' thing this a chemical element of symbol Pb, atomic number 82, and atomic weight 207.2.last updated 15 Feb 2015 http://en.wikipedia.org/wiki/Leadlast updated 15 Feb 2015
lithium A 'mass' thing this a chemical element of symbol Li, atomic number 3, and atomic weight [6.938, 6.997].last updated 15 Feb 2015 http://en.wikipedia.org/wiki/Lithiumlast updated 15 Feb 2015
livermorium A 'mass' thing this a chemical element of symbol Lv, atomic number 116, and atomic weight ().last updated 16 Feb 2015 http://en.wikipedia.org/wiki/Livermoriumlast updated 16 Feb 2015
lutetium A 'mass' thing this a chemical element of symbol Lu, atomic number 71, and atomic weight 175.0.last updated 16 Feb 2015 http://en.wikipedia.org/wiki/Lutetiumlast updated 16 Feb 2015
magnesium A 'mass' thing this a chemical element of symbol Mg, atomic number 12, and atomic weight [24.30,24.31].last updated 16 Feb 2015 http://en.wikipedia.org/wiki/Magnesiumlast updated 16 Feb 2015
manganese A 'mass' thing this a chemical element of symbol Mn, atomic number 25, and atomic weight 54.94.last updated 16 Feb 2015 http://en.wikipedia.org/wiki/Manganeselast updated 16 Feb 2015
meitnerium A 'mass' thing this a chemical element of symbol Mt, atomic number 109, and atomic weight ().last updated 16 Feb 2015 http://en.wikipedia.org/wiki/Meitneriumlast updated 16 Feb 2015
mendelevium A 'mass' thing this a chemical element of symbol Md, atomic number 101, and atomic weight ().last updated 16 Feb 2015 http://en.wikipedia.org/wiki/Mendeleviumlast updated 16 Feb 2015
mercury A 'mass' thing this a chemical element of symbol Hg, atomic number 80, and atomic weight 200.6.last updated 16 Feb 2015 http://en.wikipedia.org/wiki/Mercurylast updated 16 Feb 2015
molybdenum A 'mass' thing this a chemical element of symbol Mo, atomic number 42, and atomic weight 95.96(2).last updated 16 Feb 2015 http://en.wikipedia.org/wiki/Molybdenumlast updated 16 Feb 2015
neodymium A 'mass' thing this a chemical element of symbol Nd, atomic number 60, and atomic weight 144.2.last updated 16 Feb 2015 http://en.wikipedia.org/wiki/Neodymiumlast updated 16 Feb 2015
neon A 'mass' thing this a chemical element of symbol Ne, atomic number 10, and atomic weight 20.18.last updated 16 Feb 2015 http://en.wikipedia.org/wiki/Neonlast updated 16 Feb 2015
neptunium A 'mass' thing this a chemical element of symbol Np, atomic number 93, and atomic weight ().last updated 16 Feb 2015 http://en.wikipedia.org/wiki/Neptuniumlast updated 16 Feb 2015
nickel A 'mass' thing this a chemical element of symbol Np, atomic number 93, and atomic weight 58.69.last updated 16 Feb 2015 http://en.wikipedia.org/wiki/Nickellast updated 16 Feb 2015
niobium A 'mass' thing this a chemical element of symbol Nb, atomic number 41, and atomic weight 92.91.last updated 16 Feb 2015 http://en.wikipedia.org/wiki/Niobiumlast updated 16 Feb 2015
nitrogen A 'mass' thing this a chemical element of symbol N, atomic number 7, and atomic weight [14.00, 14.01].last updated 16 Feb 2015 http://en.wikipedia.org/wiki/Nitrogenlast updated 16 Feb 2015
nobelium A 'mass' thing this a chemical element of symbol No, atomic number 102, and atomic weight ().last updated 16 Feb 2015 http://en.wikipedia.org/wiki/Nobeliumlast updated 16 Feb 2015
osmium A 'mass' thing this a chemical element of symbol Os, atomic number 76, and atomic weight 190.2.last updated 16 Feb 2015 http://en.wikipedia.org/wiki/Osmiumlast updated 16 Feb 2015
oxygen A 'mass' thing this a chemical element of symbol O, atomic number 8, and atomic weight [15.99, 16].last updated 16 Feb 2015 http://en.wikipedia.org/wiki/Oxygenlast updated 16 Feb 2015
palladium A 'mass' thing this a chemical element of symbol Pd, atomic number 46, and atomic weight 106.4.last updated 16 Feb 2015 http://en.wikipedia.org/wiki/Palladiumlast updated 16 Feb 2015
phosphorus A 'mass' thing this a chemical element of symbol P, atomic number 15, and atomic weight 30.97.last updated 16 Feb 2015 http://en.wikipedia.org/wiki/Phosphoruslast updated 16 Feb 2015
platinum A 'mass' thing this a chemical element of symbol Pt, atomic number 78, and atomic weight 195.1.last updated 16 Feb 2015 http://en.wikipedia.org/wiki/Platinumlast updated 16 Feb 2015
plutonium A 'mass' thing this a chemical element of symbol Pu, atomic number 94, and atomic weight ().last updated 16 Feb 2015 http://en.wikipedia.org/wiki/Plutoniumlast updated 16 Feb 2015
polonium A 'mass' thing this a chemical element of symbol Po, atomic number 84, and atomic weight ().last updated 16 Feb 2015 http://en.wikipedia.org/wiki/Poloniumlast updated 16 Feb 2015
potassium A 'mass' thing this a chemical element of symbol K, atomic number 19, and atomic weight 39.10.last updated 16 Feb 2015 http://en.wikipedia.org/wiki/Potassiumlast updated 16 Feb 2015
praseodymium A 'mass' thing this a chemical element of symbol Pr, atomic number 59, and atomic weight 140.9.last updated 16 Feb 2015 http://en.wikipedia.org/wiki/Praseodymiumlast updated 16 Feb 2015
promethium A 'mass' thing this a chemical element of symbol Pm, atomic number 61, and atomic weight ().last updated 16 Feb 2015 http://en.wikipedia.org/wiki/Promethiumlast updated 16 Feb 2015
protactinium A 'mass' thing this a chemical element of symbol Pa, atomic number 91, and atomic weight 231.0.last updated 16 Feb 2015 http://en.wikipedia.org/wiki/Protactiniumlast updated 16 Feb 2015
radium A 'mass' thing this a chemical element of symbol Ra, atomic number 88, and atomic weight ().last updated 16 Feb 2015 http://en.wikipedia.org/wiki/Radiumlast updated 16 Feb 2015
radon A 'mass' thing this a chemical element of symbol Rn, atomic number 86, and atomic weight ().last updated 16 Feb 2015 http://en.wikipedia.org/wiki/Radonlast updated 16 Feb 2015
rhenium A 'mass' thing this a chemical element of symbol Re, atomic number 75, and atomic weight 186.2.last updated 16 Feb 2015 http://en.wikipedia.org/wiki/Rheniumlast updated 16 Feb 2015
rhodium A 'mass' thing this a chemical element of symbol Rh, atomic number 45, and atomic weight 102.9.last updated 16 Feb 2015 http://en.wikipedia.org/wiki/Rhodiumlast updated 16 Feb 2015
roentgenium A 'mass' thing this a chemical element of symbol Rg, atomic number 111, and atomic weight ().last updated 16 Feb 2015 http://en.wikipedia.org/wiki/Roentgeniumlast updated 16 Feb 2015
rubidium A 'mass' thing this a chemical element of symbol Rb, atomic number 37, and atomic weight 85.47.last updated 16 Feb 2015 http://en.wikipedia.org/wiki/Rubidiumlast updated 16 Feb 2015
ruthenium A 'mass' thing this a chemical element of symbol Ru, atomic number 44, and atomic weight 101.1.last updated 16 Feb 2015 http://en.wikipedia.org/wiki/Rutheniumlast updated 16 Feb 2015
rutherfordium A 'mass' thing this a chemical element of symbol Rf, atomic number 104, and atomic weight ().last updated 16 Feb 2015 http://en.wikipedia.org/wiki/Rutherfordiumlast updated 16 Feb 2015
samarium A 'mass' thing this a chemical element of symbol Sm, atomic number 62, and atomic weight 150.4.last updated 16 Feb 2015 http://en.wikipedia.org/wiki/Samariumlast updated 16 Feb 2015
scandium A 'mass' thing this a chemical element of symbol Sc, atomic number 21, and atomic weight 44.96.last updated 16 Feb 2015 http://en.wikipedia.org/wiki/Scandiumlast updated 16 Feb 2015
seaborgium A 'mass' thing this a chemical element of symbol Sg, atomic number 106, and atomic weight ().last updated 16 Feb 2015 http://en.wikipedia.org/wiki/Seaborgiumlast updated 16 Feb 2015
selenium A 'mass' thing this a chemical element of symbol Se, atomic number 34, and atomic weight 78.96(3).last updated 16 Feb 2015 http://en.wikipedia.org/wiki/Seleniumlast updated 16 Feb 2015
silicon A 'mass' thing this a chemical element of symbol Si, atomic number 14, and atomic weight [28.08, 28.09].last updated 16 Feb 2015 http://en.wikipedia.org/wiki/Siliconlast updated 16 Feb 2015
silver A 'mass' thing this a chemical element of symbol Ag, atomic number 47, and atomic weight 107.9.last updated 16 Feb 2015 http://en.wikipedia.org/wiki/Silverlast updated 16 Feb 2015
sodium A 'mass' thing this a chemical element of symbol Na, atomic number 11, and atomic weight 22.99.last updated 16 Feb 2015 http://en.wikipedia.org/wiki/Sodiumlast updated 16 Feb 2015
strontium A 'mass' thing this a chemical element of symbol Sr, atomic number 38, and atomic weight 87.62.last updated 16 Feb 2015 http://en.wikipedia.org/wiki/Strontiumlast updated 16 Feb 2015
sulfur A 'mass' thing this a chemical element of symbol S, atomic number 16, and atomic weight [32.05, 32.08].last updated 16 Feb 2015 http://en.wikipedia.org/wiki/Sulfurlast updated 16 Feb 2015
tantalum A 'mass' thing this a chemical element of symbol Ta, atomic number 73, and atomic weight 180.9.last updated 16 Feb 2015 http://en.wikipedia.org/wiki/Tantalumlast updated 16 Feb 2015
technetium A 'mass' thing this a chemical element of symbol Tc, atomic number 43, and atomic weight ().last updated 16 Feb 2015 http://en.wikipedia.org/wiki/Technetiumlast updated 16 Feb 2015
tellurium A 'mass' thing this a chemical element of symbol Te, atomic number 52, and atomic weight 127.6.last updated 16 Feb 2015 http://en.wikipedia.org/wiki/Telluriumlast updated 16 Feb 2015
terbium A 'mass' thing this a chemical element of symbol Tb, atomic number 65, and atomic weight 158.9.last updated 16 Feb 2015 http://en.wikipedia.org/wiki/Terbiumlast updated 16 Feb 2015
thallium A 'mass' thing this a chemical element of symbol Tl, atomic number 81, and atomic weight [204.3, 204.4].last updated 16 Feb 2015 http://en.wikipedia.org/wiki/Thalliumlast updated 16 Feb 2015
thorium A 'mass' thing this a chemical element of symbol Th, atomic number 90, and atomic weight 232.0.last updated 16 Feb 2015 http://en.wikipedia.org/wiki/Thoriumlast updated 16 Feb 2015
thulium A 'mass' thing this a chemical element of symbol Tm, atomic number 69, and atomic weight 168.9.last updated 16 Feb 2015 http://en.wikipedia.org/wiki/Thuliumlast updated 16 Feb 2015
tin A 'mass' thing this a chemical element of symbol Sn, atomic number 50, and atomic weight 118.7.last updated 16 Feb 2015 http://en.wikipedia.org/wiki/Tinlast updated 16 Feb 2015
titanium A 'mass' thing this a chemical element of symbol Ti, atomic number 22, and atomic weight 47.87.last updated 16 Feb 2015 http://en.wikipedia.org/wiki/Titaniumlast updated 16 Feb 2015
tungsten A 'mass' thing this a chemical element of symbol W, atomic number 74, and atomic weight 183.8.last updated 16 Feb 2015 http://en.wikipedia.org/wiki/Tungstenlast updated 16 Feb 2015
uranium A 'mass' thing this a chemical element of symbol U, atomic number 92, and atomic weight 238last updated 16 Feb 2015 http://en.wikipedia.org/wiki/Uraniumlast updated 16 Feb 2015
vanadium A 'mass' thing this a chemical element of symbol V, atomic number 23, and atomic weight 50.94last updated 16 Feb 2015 http://en.wikipedia.org/wiki/Vanadiumlast updated 16 Feb 2015
xenon A 'mass' thing this a chemical element of symbol Xe, atomic number 54, and atomic weight 131.3last updated 16 Feb 2015 http://en.wikipedia.org/wiki/Xenonlast updated 16 Feb 2015
ytterbium A 'mass' thing this a chemical element of symbol Xb, atomic number 70, and atomic weight 173.1last updated 16 Feb 2015 http://en.wikipedia.org/wiki/Ytterbiumlast updated 16 Feb 2015
yttrium A 'mass' thing this a chemical element of symbol Y, atomic number 39, and atomic weight 88.91last updated 16 Feb 2015 http://en.wikipedia.org/wiki/Yttriumlast updated 16 Feb 2015
zinc A 'mass' thing this a chemical element of symbol Zn, atomic number 30, and atomic weight 65.38(2)last updated 16 Feb 2015 http://en.wikipedia.org/wiki/Zinclast updated 16 Feb 2015
zirconium A 'mass' thing this a chemical element of symbol Zr, atomic number 40, and atomic weight 91.22last updated 16 Feb 2015 http://en.wikipedia.org/wiki/Zirconiumlast updated 16 Feb 2015