AIPMT | 2015Atomic StructureEasy
Question
Which of these statements about [Co(CN)6]3-is true :-
Options
A.[Co(CN)6]3- has four unpaired electrons and will be in a low-spin configuration.
B.[Co(CN)6]3- has four unpaired electrons and will be in a high-spin configuration.
C.[Co(CN)6]3- has no unpaired electrons and will be in a high-spin configurtion.
D.[Co(CN)6]3- has no unpaired electrons and will be in a low-spin configuration.
Solution
[Co(CN)6]-3
Co+3 = 3d6 4s0 4p0
∵ in presence of strong field ligand, pairing of electrons occurs so in this complex no unpaired electron is present and it is low spin complex.
Co+3 = 3d6 4s0 4p0
∵ in presence of strong field ligand, pairing of electrons occurs so in this complex no unpaired electron is present and it is low spin complex.
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