Home Chemistry Co-ordinatios Compounds Matching Type Question Match Column-I with Column-II and select the…
Chemistry Co-ordinatios Compounds Matching Type Question Single Correct MCQ
Published on: August 11, 2026

Match Column-I with Column-II and select the correct answer with respect to hybridisation using the codes given below :

Column - I

Column - II

(Complex)

(Hybridisation)

(I)

[Au F4]

(p)

dsp2 hybridisation

(II)

[Cu(CN)4]3–

(q)

sp3 hybridisation

(III)

[Co(C2O4)3]3–

(r)

sp3d2 hybridisation

(IV)

[Fe(H2O)5NO]2+

(s)

d2sp3 hybridisation

Codes :

(I) (II) (III) (IV)

A
q p r s
B
p q s r
C
p q r s
D
q p s r

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Text Solution

Verified by Experts
The correct answer is:
B

(I) Au in +3 oxidation state with 5d 8 configuration has higher CFSE. So complex has dsp 2 hybridisation and is diamagnetic.

(II) Cu is in +1 oxidation state with 3d 10 configuration and no (n –1)d orbital is available for dsp 2 hybridisaiton, so ns and np orbitals undergo sp 3 hybridisation and complex is diamagnetic.

(III) Co is in +3 oxidation state and 3d 6 configuration has higher CFSE. So complex is diamagnetic and has d 2 sp 3 hybridisation.

(IV) Fe is in +1 oxidation state and the complex is paramagnetic with three unpaired electrons.

[Fe(H 2 O) 5 NO] 2+ ;

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