Question
Which of the following pairs of ions are isoelectronic and isostructural?
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 :
$$CO_3^{2 - },NO_3^ - $$
Solution :
$$CO_3^{2 - }$$ and $$NO_3^ - $$ are isoelectronic as both contain 32 electrons and isostructural as both have trigonal planar structures with $$s{p^2}$$ hybridisation of the central atom.