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Question

Number of unpaired electrons in $$Mn^{3+}$$ is:

A
$$2$$
B
$$3$$
C
$$5$$
D
$$4$$
Solution
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Correct option is C. $$4$$
The electronic configuration of $$Mn^{3+}$$ is $$[Ar]3d^44s^0$$. So there are $$4$$ unpaired electrons in $$3d$$. Hence correct answer is option $$C$$.

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