Structure Of Atom Question 3

Question 3 - 2024 (27 Jan Shift 1)

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

(1) $[\operatorname{Ar}] 3 d^{7}$

(2) $[\operatorname{Ar}] 3 d^{8}$

(3) $[Ar] 3 d^{3}$

(4) $[\operatorname{Ar}] 3 d^{6}$

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Answer (4)

Solution

$3 d^{7}$ $3 d^{8}$ $3 d^{3}$ $3 d^{6}$
No.of. unpaired e 3 2 3 4
Spin only
Magnetic
moment
$\sqrt{15}$
$BM$
$\sqrt{8}$
$BM$
$\sqrt{15}$
$BM$
$\sqrt{24}$
$BM$