Question

The formula of the sulphate of an element X is X2(SO4)3. The formula of nitride of element X will
be -
(a) X2N
(b) XN2
(c) XN
(d) X2N3
​

Answer 1

The required answer is (c).
Reson - We have seen in the question that valency of X is 3.
and we know that valency of nitride is 3.
hence both the valency cancel out and the answer will be XN.

hope it helps.
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Answer 2

Given: The formula of the sulphate of an element X is $X_2(SO_4)_3$.

To find: We have to find the formula of nitride.

Solution:

To determine the formula of nitride of X we have to follow the steps-

The formula of the sulphate of an element X is $X_2(SO_4)_3$.

Here the valency of X is 3 and the valency of sulfate ion is 2.

The valency of nitride is 3.

So, the formula of the compound is $X_3N_3$.

This formula can be compressed to written as XN.

Thus, the formula of nitride of X is XN.

The correct option is c) XN.