Coordination Compounds Ques 46
46. Which one of the following is an outer orbital complex and exhibits paramagnetic behaviour?
[2012]
(a) $[Ni(NH_3)_6]^{2+}$
(b) $.[Zn(NH_3)_6)]^{2+}$
(c) $[Cr(NH_3)_6]^{3+}$
(d) $[Co(NH_3)_6]^{3+}$
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Answer:
Correct Answer: 46.(a)
Solution:
(a) $[Ni(NH_3)_6]^{2+}$
$Ni^{2+}=3 d^{8}$, according to $CFT=t _{2 g}^{6} e_g^{2}$ therefore, hybridisation is $s p^{3} d^{2}$ & complex is paramagnetic and outer orbital.
BETA
