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The number of geometrical isomers of the...

The number of geometrical isomers of the complex `[Co(NO_(2))_(3) (NH_(3))_(3)]` is

A

0

B

3

C

4

D

2

Text Solution

Verified by Experts

The correct Answer is:
D
Two geometrical isomers are possible for the octahedral coordination entities of the type `[M_(3)b_(3)]`. If three donor atoms of the same ligands occupy adjacentr positions at the corners of an octahedral face, we have the facial (fac) isomer:

When the positions are around the meridian of the octahedron, we get the meridional (mer) isomer:
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