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Q.

Electrovalency of metal and non-metal are different in

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a

Calcium sulphide

b

Magnesium oxide

c

Sodium fluoride

d

Calcium chloride

answer is A.

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Detailed Solution

All given options are ionic compounds. Among these compounds, calcium chloride is CaCl2. The ions present in it are Ca2+ and Cl-. Here, the electro valency of calcium is 2 and chlorine is 1.

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