Question

Which of the following are isoelectronic and isostructural ?
`NO_3^(-), CO_3^(2-), ClO_3^(-), SO_3`
A. `NO_3^(-), CO_3^(2-)`
B. `SO_3 , NO_3^(-)`
C. `ClO_3^(-), CO_3^(2-)`
D. `CO_3^(2-), SO_3`

Answer 1

Correct Answer - A
Number of valence electrons in C, N, O, S and Cl are 4, 5, 6, 6 and 7 respectively. Therefore, number of valence electron in `NO_4^(+)` are 24, in `CO_3^(2-)`-are 24 in `ClO_2^(-)` are 26 and in `NO_3^(-)` are 24. Thus, `NO_3^(-) , CO_3^(2-) and SO_3` are no electronic Their Lewis structure are as follows

Thus, `CO_3^(2-) and NO_3^(-)` are also isostructural