Q. Which of the following complexes is an outer orbital complex?
A) $\lbrack Fe(CN)_{6}\rbrack^{4 -}$
B) $\left\lbrack Co\left( NH_{3} \right)_{6} \right\rbrack^{3 +}$
C) $\left\lbrack Ni\left( NH_{3} \right)_{6} \right\rbrack^{2 +}$
D) None of these
Explanation
(c)
Complex ion Hybridisation of central atom
$\left\lbrack Fe(CN)_{6} \right\rbrack^{4 - \ }\ \ \ \ \ \ \ \ \ \ \ d^{2}sp^{3}(inner)$
$\left\lbrack Mn(CN)_{6} \right\rbrack^{4 - \ }\ \ \ \ \ \ \ \ \ d^{2}sp^{3}(inner)$
$\left\lbrack Co\left( NH_{3} \right)_{6} \right\rbrack^{3 + \ }\ \ \ \ \ \ \ \ d^{2}sp^{3}(inner)$
$\left\lbrack Ni\left( NH_{3} \right)_{6} \right\rbrack^{2 + \ }\ \ \ \ \ \ \ \ \ sp^{3}d^{2}(outer)$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.