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

Explanation

Both `CO_(3)^(2-)(6+3xx8+2=32)andNO_(3)^(-)(7+3xx8+1=32)` have 32 electrons and hence are isoelectroidized. Further, both `CO_(3)^(2-)andNO_(3)^(-)` ions are planar and hence isostructural since both C and N are `sP^(2)`-hybridized.