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

Options

A. `CO_3^(2-),SO_3^(2-)`
B. `ClO_3^(-), CO_3^(2-)`
C. `SO_3^(2-), NO_3^(-)`
D. `ClO_3^(-) , SO_3^(2-)`

Answer

D

Explanation

Number of electrons
`CO_3^(2-)`=6+2+24=32
`SO_3^(2-)` =16+2+24=42
`ClO_3^(-)`=4+24+1=42
`CO_3^(2-)`=6+24+2=32
`NO_3^(-)`=7+2+24=33
Hence, `ClO_3^(-)` and `SO_3^(2-)` are isoelectronic and are pyramidal in shape.