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  4. Magnetic moment of Ce3+ ion on the basis of ‘spin-only’ formula will beB.M.

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Q. Magnetic moment of $Ce^{3+}$ ion on the basis of ‘spin-only’ formula will be_____B.M.

The d-and f-Block Elements

Solution:

The electronic configuration of $Ce^{3+}$ is $4f^1$.
Hence, $\mu = \sqrt{n\left(n+2\right)}= \sqrt{1\left(1+2\right)}$
$= 1.732\,B.M.$