Biological Significance of CalciumĬalcium is an essential element in the human body. Calcium has two valence electrons and a very low electronegativity of 1. It has an electron configuration of 2s 2. It is in the fourth row of the periodic table, beneath magnesium. The Element Calcium in the Periodic TableĬalcium under argon atmosphere (Source: Wikipedia Commons)Ĭalcium, symbol Ca, is an alkaline earth metal in the second column of the periodic table.
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