# The Formula of Carbonate of a Metal M is M2co3. What Will Be the Formula of Its Iodide ? - Science

Short Note

The formula of carbonate of a metal M is M2CO3.

What will be the formula of its iodide ?

#### Solution

Let us first work out the valency of the metal M (we know that carbonate ion has a valency of −2):

Element / Ion     M   "CO"_3^"2-"
Valency          1      2

It is clear that M has a valency of 1.

Formula of iodide of M:

Element  M I
Valency   1  1

Crossing  the valencies, formula of the iodide of M is MI.

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#### APPEARS IN

Lakhmir Singh Class 9 Chemistry - Science Part 2
Chapter 3 Atoms and Molecules
Hots Questions | Q 49.1 | Page 153