Which one of the following is an outer orbital complex and exhibits paramagnetic behaviour?
As learnt in
Hybridisation -
sp3d2 - square bipyramidal or octahedral
d2sp3 - octahedral
sp3 - tetradedral
dsp2 - square planar
- wherein
sp3d2 - outer complex
d2sp3 - inner complex
sp3 -
dsp2 -
Electronic configuration of Ni2+ in [Ni (NH3)6]2+ : 3d8 4s° 4p°
NH3 is a strong field ligand. So,
Since, 2 orbitals are not vacant in Ni2+, so it will form an outer orbital complex with sp3d2 hybridization and 2 unpaired electrons giving it paramagnetic nature.
Option 1)
This option is correct
Option 2)
This option is incorrect
Option 3)
This option is incorrect
Option 4)
This option is incorrect