Question

MNO3 is the formula of nitrate of a metal M. Write down the formulae of 1). Oxide of M 2). Nitride of M 3). Sulphate of M​

Answer 1

Answer:

1. M2O . because in the Ques . given that : MNO3 is formula of nitrate . this means that M metal has valency = 1. and when we cross multiply the valencies of M and O2 , we get M2O

2 . M3N

3. M2SO4....

Answer 2

The formulae are:

1) $M_2O$

2) $M_3N$

3) $M_2SO_4$

Explanation:

The formula of the nitrate is $MNO_3$

It is known that the valency on nitrate ion is 1, hence, valency on the metal would also be 1.

Thus the formula of:

1) Oxide of M $- M_2O$(Since oxide has a valency of 2, and metal 1, so on cross multiplication, metal would get a subscript of 2 and oxygen 1)

1) Nitride of M $- M_3N$(Since nitride has a valency of 3, and metal 1, so on cross multiplication, metal would get a subscript of 3 and nitrogen 1)

1) Sulphate of M $- M_2SO_4$(Since sulfate has a valency of 2, and metal 1, so on cross multiplication, metal would get a subscript of 2 and sulfate 1)