1.

Among the following, chose the correct pair, which is isostructural and isoelectronic ?A. `NO_(3)^(-),CO_(3)^(2-)`B. `SO_(3),NO_(3)^(-)`C. `ClO_(3)^(-),CO_(3)^(2-)`D. `CO_(3)^(2-),ClO_(3)^(-)`

Answer» Correct Answer - A
For `NO_(3)^(-)` ion, number of electrons
`=7+3xx8+1=32`
`H=(V+Y-C+A)/(2)=(5+1)/(2)=3`
`rArr` Hybridisation `=sp^(2)`
For `CO_(3)^(2-)` ion, number of electrons, `=6+3xx8+2=32`
`H=(4+2)/(2)=3`
`rArr` Hydrisisation `=sp^(2)`
`:.` Both `NO_(3)^(-) and CO_(3)^(2-)` are isoelectronic and isostructural species.


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