A Study of Calcium (228 words, 1 pages)
Calcium Element Calcium Element symbol...CA Atomic weight...40.08 Element number...20 Number ofprotons...20 Number of electrons...20 Number of neutrons...20 Density at...68? FBoiling point...2,264?F Melting point...1,562?F Calcium was discovered by SirHumphrey Davis in 1808. Calcium is a mineral found in abundance in the Earth'souter crust. It is the fifth most abundant mineral in ...
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