question_answer

Which are isoelectronic and isostructural?

A)  \[NO_{3}^{-},CO_{3}^{2-}\]      

B)  \[S{{O}_{3}},NO_{3}^{-}\]

C)  \[ClO_{3}^{-},CO_{3}^{2-}\]   

D)  \[CO_{3}^{2-},S{{O}_{3}}\]

Correct Answer: A

Solution :

Isoelectronic means same number of electrons and isostructural means same structure. \[NO_{3\,\,}^{-}\,\,\,\,\,\,\,\,\,7+8\times 3+1=32\] \[CO_{3}^{2-}\,\,\,\,\,\,\,\,\,6+8\times 3+2=32\]              Hence, \[NO_{3}^{-}\] and \[CO_{3}^{2-}\] are isoelectronic and isostructural both.