question_answer

Which of the following pairs of species has same electronic configuration                                             [UPSEAT 2002]

A)                 \[Z{{n}^{2+}}\] and \[N{{i}^{2+}}\]          

B)                 \[C{{o}^{+3}}\] and \[N{{i}^{4+}}\]

C)                 \[C{{o}^{2+}}\] and \[N{{i}^{2+}}\]          

D)                 \[T{{i}^{4+}}\] and \[{{V}^{3+}}\]

Correct Answer: B

Solution :