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Spin-only magnetic moment of a given ion from its unpaired electrons (or the reverse)

This type of question, asked 8 times: 9 May 2024 S1, 11 May 2024 S1, 12 May 2024 S1, 23 Apr 2025 S1, 26 Apr 2025 S2, 15 Apr 2026 S1, 13 May 2026 S2, 14 May 2026 S2. All 9 questions below, oldest first.

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  1. Question 1

    9 May 2024 S1

    76
    Find the value of spin only magnetic moment for chromium cation in +2 state.

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  2. Question 2

    11 May 2024 S1

    62
    Identify a CORRECT formula for spin only magnetic moment.

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  3. Question 3

    12 May 2024 S1

    88
    What is the numerical value of spin only magnetic moment of copper in +2 state?

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  4. Question 4

    23 Apr 2025 S1

    78
    Find the value of spin only magnetic moment for Zn2+Zn^{2 +} in BM.

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  5. Question 5

    26 Apr 2025 S2

    91
    What is the value of spin only magnetic moment for Cu2+Cu^{2 +} in BM?

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  6. Question 6

    15 Apr 2026 S1

    34
    What is the value of spin only magnetic moment for Cu2+\mathrm{Cu^{2+}} in BM?

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  7. Question 7

    13 May 2026 S2

    33
    The effective magnetic moment (μ)(\mu) of Cr3+\mathrm{Cr^{3+}} is measured as 3.873.87 Bohr magnetons (BM). Determine the number of unpaired electrons in Cr3+\mathrm{Cr^{3+}}.

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  8. Question 8

    14 May 2026 S2

    35
    Calculate magnetic moment for Fe3+\mathrm{Fe^{3+}}?

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  9. Question 9

    14 May 2026 S2

    34
    Calculate the spin-only magnetic moment of divalent cation of a transition metal with atomic number 2525.

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