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Calcium 20 Ca 40.078
Basics about the element Calcium:
-The element is a grey silvery metal. As a metal, it is hard. Calcium is the fifth most abundant element in earth's crust.
-Calcium does not occur as a metal in nature. It occurs naturally in limestone, gypsum, and fluorite. The element makes up 3.5% of earth's crust.
Calcium is only found in living organisms
Calcium is essential in leaves, bones, teeth, and shells
Calcium is necessary for animal and plant nutrition
