The valency of barium in barium chloride is _____.

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Solution

The correct option is C
2

Barium chloride $({BaCl}_{2})$ contains barium $(Ba)$ and chlorine $(Cl)$ atoms in it. The molecular formula of a compound is written by the criss-cross method as shown below.

Element: Ba Cl
$↘ ↙$
Valency: 2 1

From the above method, valency of barium is two and that of chlorine is one.

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