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Question :-
What is the valency of Ca in the compound CaO?
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The valency of calcium is 2+. Calcium has 2 electrons in its outermost shell ,its electronic configuration being (2,8,8,2). In order to attain stability it loses 2 electrons to become stable according to the octet rule. ... valency of calciumis +2..
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2 plus...................
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