Q11 of 75 Page 81

The formula of carbonate of a metal M is M2CO3. What is the formula for phosphate of M?

It is given that carbonate of a metal M is M2CO3.

By applying criss cross method, we can know the valency of “M”:



Hence, the valency of “M” is +1


Now, formula for phosphate of metal M:



Formula: M3PO4


Thus, the formula for phophate of metal is M3PO4.


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