Home Chemistry Co-ordinatios Compounds NTA Abhiyas Question Complex X of composition Cr(H 2 O) 6 Cl n ha…
Chemistry Co-ordinatios Compounds NTA Abhiyas Question Single Correct MCQ
Published on: August 13, 2026

Complex X of composition Cr(H 2 O) 6 Cl n has a spin only magnetic moment of 3.83 BM. It reacts with AgNO 3 and shows geometrical isomerism.

The IUPAC nomenclature of X is

A
Tetraaquadichlorido chromium (IV) chloride dihydrate
B
Tetraaquadichlorido chromium (III) chloride dihydrate
C
Hexaaqua chromium (III) chloride
D
Dichloridotetraaqua chromium (IV) chloride dihydrate

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Text Solution

Verified by Experts
The correct answer is:
B

This compound can be identified and named as follows

Cr(H 2 O) 6 Cl n

As ( ) spin = 3.8 B. M. =

On solving n = 3

Oxidation No. of Cr = +3

As compound also shows Geometrical isomerism so it will be [Cr (H 2 O) 4 C1 2 ] Cl. 2H 2 O

It is named as Tetraaquadichloridochromium(III)chloride dihydrate

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