Q.

Assertion (A): The valency of oxygen is 2.

Reason (R): The combining capacity of oxygen is 2.

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a

A is incorrect and R is correct.

b

Both A and R are correct and R is the correct explanation of A.

c

A is correct and R is incorrect.

d

Both A and R are correct but R is not the correct explanation of A.

answer is A.

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Detailed Solution

As both Assertion  and Reason are correct It is  a fact that  Valency is the combining capacity of an element. The valency of oxygen is 2 because the valency of non-metal is given by subtracting the number of valence electrons present in an atom from 8( 8- valence electrons) so for O  8-6=2.

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