elements
H: Hydrogen
He: Helium
Li: Lithium
Be: Beryllium
B: Boron
C: Carbon
N: Nitrogen
O: Oxygen
F: Fluorine
Ne: Neon
Na: Sodium
Mg: Magnesium
Al: Aluminum
Si: Silicon
P: Phosphorus
S: Sulfur
Cl: Chlorine
Ar: Argon
K: Potassium
Ca: Calcium
Sc: Scandium
Ti: Titanium
V: Vanadium
Cr: Chromium
Mn: Manganese
Fe: Iron
Co: Cobalt
Ni: Nickel
Cu: Copper
Zn: Zinc
Se: Selenium
Br: Bromine
Kr: Krypton
Rb: Rubidium
Sr: Strontium
Ag: Silver
Sn: Tin
I: Iodine
Xe: Xenon
Cs: Cesium
Ba: Barium
Pt: Platinum
Au: Gold
Hg: Mercury
Pb: Lead
Rn: Radon
Fr: Francium
Ra: Radium
U: Uranium
Pu: Plutonium
Am: Americium
Bk: Berkelium
Cf: Californium