Question

The electronic configuration of an element is [Ar] 493d2. The magnetic moment is
A) 4.82 BM B) 3.82 BM C) 2.82 BM
D) 1.82 BM​

Answer 1

Answer:

4.82BM(a)I hope it is correct

Answer 2

The Magnetic moment of  $[NiCl4]^{2-}$ is 2.82BM

Given:

The electronic Configuration of a element is Ar [$3d^{8}4s^{2}$]

To Find :

The Magnetic moment of the element which has an electronic configuration.

Solution:

Oxidation state of Ni = +2

Ni(28) = $Ar [3d^{8}4s^{2}]$

Magnetic Moment Ч = $\sqrt{n(n+2)}$

n is the No. of unpaired electrons

n = 2

Therefore,

Ч = $\sqrt{2(2+2)}$

    =  2.82BM

The Magnetic moment of the element is 2.82BM

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