Question

[Ni (NH3)4]2+ is diamagnetic or paramagnetic​

Answer 1

[Ni (NH3)4]^2+ is paramagnetic.

Answer 2

Explanation:

[Ni(NH3)4]²+ is paramagnetic.

Reason -

Electronic configuration of Ni =

• [Ar] 4s² 3d^8

Now,

O.N. of Central metal =

x + 0×4 = 2

x = +2

Electronic configuration of Ni²+ =

• [Ar] 3d^8 4s^0

Orbital diagram =

• Refer to the attachment

Here, we see that it contains 2 unpaired electrons.

That's why [Ni(NH3)4]²+ is paramagnetic.

Additional information -

C.N. ofcentral metal -

• Ligan × Denticity

= 4 × 1

= 4

Then,

Hybridisation = sp³

Electrons doesn't pairs up because NH3 is a weak ligan.

μ = √n(n+2) B.M. {n = no. of unpaired electrons}

= √2(2+2)

= √8

= 2√2 B.M.