Question

Calculate the magnetic moment of Fe³⁺ ion (at. no. of Fe = 26).

Solution

Electronic configuration of Fe³⁺ ion is 1s² 2s² 2p⁶ 3s² 3p⁶ 3d⁵ 4s⁰It has 5 unpaired electrons
∴ Magnetic moment,

$μ = \sqrt{n (n + 2)} W h e r e n i s u n p a i r e d e l e c t r o n = \sqrt{5 (5 + 2)} = 5.9 BM$

Some More Questions From The d-And-f-Block Elements Chapter

Which is a stronger reducing agent Cr²⁺ or Fe²⁺ and why?

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The D-And-f-Block Elements

Calculate the magnetic moment of Fe³⁺ ion (at. no. of Fe = 26).

Some More Questions From The d-And-f-Block Elements Chapter

Which is a stronger reducing agent Cr²⁺ or Fe²⁺ and why?

Explain why Cu⁺ ion is not stable in aqueous solutions?

Actinoid contraction is greater from element to element than lanthanoid contraction. Why?

On what ground can you say that scandium (Z = 21) is a transition element but zinc (Z = 30) is not?

The outer electronic configuration of copper is 3d¹⁰ 4s¹, yet it is considered transition element. Why?

Why the melting points of transition elements are high?

Why Zn, Cd and Hg are not regarded as transition elements?

Name the first element of 3rd transition series.

Though copper, silver and gold have completely filled sets of d-orbitals yet they are considered as transition metals. Why?

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The D-And-f-Block Elements

Calculate the magnetic moment of Fe3+ ion (at. no. of Fe = 26).

Some More Questions From The d-And-f-Block Elements Chapter

Which is a stronger reducing agent Cr2+ or Fe2+ and why?

Explain why Cu+ ion is not stable in aqueous solutions?

Actinoid contraction is greater from element to element than lanthanoid contraction. Why?

On what ground can you say that scandium (Z = 21) is a transition element but zinc (Z = 30) is not?

The outer electronic configuration of copper is 3d10 4s1, yet it is considered transition element. Why?

Why the melting points of transition elements are high?

Why Zn, Cd and Hg are not regarded as transition elements?

Name the first element of 3rd transition series.

Though copper, silver and gold have completely filled sets of d-orbitals yet they are considered as transition metals. Why?

Mock Test Series

NCERT Sample Papers

Entrance Exams Preparation

Calculate the magnetic moment of Fe³⁺ ion (at. no. of Fe = 26).

Which is a stronger reducing agent Cr²⁺ or Fe²⁺ and why?

Explain why Cu⁺ ion is not stable in aqueous solutions?

The outer electronic configuration of copper is 3d¹⁰ 4s¹, yet it is considered transition element. Why?