Magnetic moment of a divalent ion in aqu

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Target Exam

CUET

Subject

Chemistry

Chapter

Inorganic: D and F Block Elements

Question:

Magnetic moment of a divalent ion in aqueous solution with atomic number 25 is:

Options:

\(\sqrt{5(5+1)}\) BM

\(\sqrt{5(5+2)}\) BM

\(\sqrt{7(7+2)}\) BM

2\(\sqrt{5(5+1)}\) BM

Correct Answer:

\(\sqrt{5(5+2)}\) BM

Explanation:

₂₅Mn: [Ar]4s²3d⁵

Mn²⁺: [Ar]3d⁵

↑

so, there are five unpaired electrons.

n= 5

Magnetic moment, μ = \(\sqrt{n(n+2)}\) = \(\sqrt{5(5+2)}\) BM