Calcium

Properties, & Compounds

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Apr 3, 2024 - 02:59

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chemical properties of Calcium (part of Periodic Table of the Elements imagemap)

calcium (Ca), chemical element, one of the alkaline-earth metals of Group 2 (IIa) of the periodic table. It is the most abundant metallic element in the human body and the fifth most abundant element in Earth’s crust.

Element Properties
atomic number	20
atomic weight	40.078
melting point	842 °C (1,548 °F)
boiling point	1,484 °C (2,703 °F)
specific gravity	1.55 (20 °C, or 68 °F)
oxidation state	+2
electron configuration	1s²2s²2p⁶3s²3p⁶4s²