Question

X' is a divalent element. The chemical formula of its nitride and nitrate respectively is

X2N3 and X(NO3)2

X3N2 and X(NO3)2

X(NO3)2 and X3N2

X (NO3)3 and X2N3​

Answer 1

Answer:

option B will be the answer..

Answer 2

X3N2 and X(NO3)2 is the correct answer.

• As per question, X is divalent element which states that valency of X is 2.

• As already known, valency of nitrogen is -3, therefore 2 atoms of nitrogen will combine with 3 atoms of X. Thus, the compound formed will be X3N2.

• NO3 or nitrate ion has valency -1. Hence, two moles of nitrate will combine with one mole of X, forming the compound with formula X(NO3)2.