1.

Which of the following are isoelectronic and isostructural \[NO_{3}^{-},\,CO_{3}^{2-},\,ClO_{3}^{-},\,S{{O}_{3}}\] [IIT Screening 2003]

A.      \[NO_{3}^{-},\,CO_{3}^{2-}\]    
B.      \[S{{O}_{3}},\,NO_{3}^{-}\]
C.      \[ClO_{3}^{-},\,CO_{3}^{2-}\]
D.      \[CO_{3}^{2-},\,S{{O}_{3}}\]
Answer» B.      \[S{{O}_{3}},\,NO_{3}^{-}\]


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