1.

If the formula of a metal nitrite is M(NO_(2))_(2.), then the formula of its dihydrogen phosphate is

Answer»

`M_(2)(PO_(4))_(3)`
`MHPO_(4)`
`M(H_(2)PO_(4))_(2)`
`M_(2)HPO_(4)`

Solution :`M(NO_(2))_(2)`, HENCE valency of metal is 2.


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