Which of the following pairs of ions are isoelectronic and isostructural?

Options

A. `CO_(3)^(2-),NO_(3)^(-)`
B. `ClO_(3)^(-),CO_(3)^(2-)`
C. `SO_(3)^(2-),NO_(3)^(-)`
D. `ClO_(3)^(-),SO_(3)^(2-)`

Answer

A, D

Explanation

`CO_(3)^(2-)&NO_(3)^(-)` are isoelectronic and isostructural
`underline(O^(-)-underset(O)underset(||)(C)-O^(-)" "O=underset(O)underset(darr)(N)-O^(-))`
`sp^(2),` trigonal planar
`ClO_(3)^(-) and SO_(3)^(-2)` are also isoelectronic and isostructural
`ClO_(3)" "SO_(3)^(-2)`
`underline(O=underset(O)underset(||)(overset(** **)(Cl))-O^(-)" "O^(-)-underset(O)underset(||)(overset(** **)(S))-O^(-))`
`sp^(3)`, pyramid