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Question 21088

NEET Chemistry · Hard

Structure of Atom: Orbital filling MCQ

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Orbital fillingHardQuestion 21088

Question

The number of unpaired electrons in $Fe^{3+}$ is:

A
5
Correct
B
3
C
4
D
1

Correct answer

5

Explanation

Fe is [Ar]3d $^6$ 4s $^2$ ; Fe $^{3+}$ becomes [Ar]3d $^5$ .

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