Studied by 29 peopleCalcium
Ca
Oxygen
O
Chlorine
Cl
Sulfur
S
Helium
He
Iodine
I
Silicon
Si
Iron
Fe
Nitrogen
N
Lead
Pb
Potassium
K
Neon
Ne
Mercury
Hg
Fluorine
F
Copper
Cu
Hydrogen
H
Argon
Ar
Lithium
Li
Boron
B
Sodium
Na
Zinc
Zn
Barium
Ba
Silver
Ag
Beryllium
Be
Carbon
C
Phosphorous
P
Magnesium
Mg
Aluminum
Al
Note
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