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Which of the following has the maximum number of unpaired electrons? - Chemistry (Theory)

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Question

Which of the following has the maximum number of unpaired electrons?

Options

  • Zn

  • Fe2+

  • Ni3+

  • Cu+

MCQ
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Solution

Fe2+

Explanation:

Fe has an atomic number of 26, so Fe2+ has the electronic configuration:

[Ar] 3d6

In 3d6, there are 4 unpaired electrons.

Hence, Fe2+ has the maximum number of unpaired electrons.

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Chapter 8: d-and ƒ-Block Elements - OBJECTIVE (MULTIPLE CHOICE) TYPE QUESTIONS [Page 498]

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Nootan Chemistry Part 1 and 2 [English] Class 12 ISC
Chapter 8 d-and ƒ-Block Elements
OBJECTIVE (MULTIPLE CHOICE) TYPE QUESTIONS | Q 4. | Page 498
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