1.

The formula of chloride of an element X is XCl3. The formula of its oxide will be :(1) XO2 (2) XO3 (3) X2O3 (4) X3O2

Answer»

Correct option: (3) X2O3

Explanation:

Since element chloride = XCl3

then valency of X = 3

Oxide of element X = X+3 O–2 = X2O3



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