Find out the number of geometrical isomer(s) possible for the complex [Co(NH3)3(NO2)3].

The complex [Co(NH3)3(NO2)3] is an octahedral complex. In octahedral complexes, geometrical isomers are possible when there are at least two different types of ligands.

In this complex, there are two types of ligands: NH3 and NO2.

The possible geometrical isomers for this complex are:

1. Facial (fac) isomer: In this isomer, three identical ligands occupy the vertices of a triangular face of the octahedron. For the given complex, the fac isomer would have the three NH3 groups and the three NO2 groups on opposite faces of the octahedron.

2. Meridional (mer) isomer: In this isomer, three identical ligands occupy the positions along the meridian. For the given complex, the mer isomer would have the three NH3 groups and the three NO2 groups in a meridional position.

So, there are 2 geometrical isomers possible for the complex [Co(NH3)3(NO2)3].

The complex [Co(NH3)3(NO2)3] is an octahedral complex. In octahedral complexes, geometrical isomers are possible when there are at least two different types of ligands.

Here, we have two types of ligands: NH3 and NO2.

The possible geometrical isomers for this complex are:

1. Facial (fac) isomer: In this isomer, three identical ligands occupy the vertices of a triangular face of the octahedron. For the given complex, the fac isomer would have the three NH3 ligands and the three NO2 ligands each occupying one face of the octahedron.

2. Meridional (mer) isomer: In this isomer, three identical ligands occupy a meridian of the octahedron. For the given complex, the mer isomer would have the three NH3 ligands and the three NO2 ligands each occupying one meridian of the octahedron.

So, there are 2 geometrical isomers possible for the complex [Co(NH3)3(NO2)3].