[Co(en)2(NH3)Cl]^2+ is known to be a diamagnetic complex. What is the type of hybridisation it shows?(a) dsp^2(b) sp^3(c) d^2sp^3(d) sp^3d^2This question was posed to me in examination.My query is from Bonding in Coordination Compounds topic in section Coordination Compounds of Chemistry – Class 12

[Co(en)2(NH3)Cl]^2+ is known to be a diamagnetic complex. What is the

1.	[Co(en)2(NH3)Cl]^2+ is known to be a diamagnetic complex. What is the type of hybridisation it shows?(a) dsp^2(b) sp^3(c) d^2sp^3(d) sp^3d^2This question was posed to me in examination.My query is from Bonding in Coordination Compounds topic in section Coordination Compounds of Chemistry – Class 12
Answer» Correct OPTION is (c) d^2sp^3 Explanation: Co^3+ has 3d^6 configuration. For a complex to be DIAMAGNETIC, it should have no unpaired electrons. So, the single electrons in the 3d orbital will have to pair up and form 3 pairs leaving two 3d orbitals VACANT. This results in d^2sp^3 HYBRIDISATION.

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