question_answer

Which of the following statements is correct for the complex \[C{{a}_{2}}[Fe{{(CN)}_{5}}{{O}_{2}}]\] having \[{{t}_{2g}}^{6},{{e}_{g}}^{0}\]electronic configuration?

A) \[{{d}^{2}}s{{p}^{3}}\] hybridised and diamagnetic

B) \[s{{p}^{3}}{{d}^{2}}\] hybridised and paramagnetic

C) \[s{{p}^{3}}{{d}^{2}}\] hybridised and diamagnetic

D) \[{{d}^{2}}s{{p}^{3}}\] hybridised and paramagnetic

Correct Answer: D

Solution :

[d] \[F{{e}^{2+}}:\]             Complex is paramagnetic due topresence of unpaired electron at \[O_{2}^{-}\] i.e., superoxide acting as ligand.