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

Options

A. `SO_(3)^(2-) , NO_(3)^(9-)`
B. `ClO_(3)^(-), SO_(3)^(2-)`
C. `CO_(3)^(2-), SO_(3)^(2-)`
D. `ClO_(3)^(-) , CO_(3)^(2-)`

Answer

B

Explanation

`SO_(3)^(2-) to sp^(3) to ` Pyramidal ` to 16 + 24 + 2 = 42 e^(-)`
`CIO_(3)^(-) to sp^(3) to ` Pyramidal ` to 17 + 24 + 1 = 42 e^(-)`
`CO_(3)^(2-) to sp^(2) to ` Triangular planar ` to 6 24 + 2 = 32 e^(-)`
` NO_(3)^(2-) to sp^(2) to ` Triangular planar ` to 7 + 24 + 1 = 32 e^(-)`
Thus, `SO_(3)^(2-) and CIO_(3)^(-)` are isoelectronic and
isostructureal .