Engineering
Chemistry
Electronic Configuration
Question

Which of the following electronic configuration would be associated with the highest magnetic moment ?

(4) [Ar]3d3

(1) [Ar]3d7

(2) [Ar]3d6

(3) [Ar]3d8

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Solution
  Electronic configuration No. of unpaired electron
1 [Ar]3d3 ⇒ 3
2 [Ar]3d6 ⇒ 4
3 [Ar]3d8 ⇒ 2
4 [Ar]3d7 ⇒ 3

More are the no. of unpaired electron, more is the magnetic moment (spin only)