Coordination Compounds - Result Question 57
####64. In which of the following coordination entities the magnitude $\Delta_o$ (CFSE in octahedral field) will be maximum?
[2008]
(a) $[Co(H_2 O)_6]^{3+}$
(b) $[Co(NH_3)_6]^{3+}$
(c) $[Co(CN)_6]^{3-}$
(d) $[Co(C_2 O_4)_3]^{3-}$
(At. No. $Co=27$ )
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Solution:
- (c) Out of the given ligands water, ammonia, cyanide and oxalate, maximum splitting will occur in case of cyanide $(CN^{-})$i.e. the magnitude of $\Delta_0$ will be maximum in case of $[Co(CN)_6]^{3-}$.
In octahedral field the crystal field splitting of $d$ orbitals of a metal ion depends upon the field produced by the ligands.
