d and f BLOCK ELEMENTS

Which of the following correctly represents the 'spin-only' formula for calculating magnetic moment (µ) based on the number of unpaired electrons (n)?

• µ = n(n+1)
• µ = √[n(n+1)]
• µ = n²
• µ = √[n(n+2)]

What is the primary difference between ferromagnetism and paramagnetism as described?

• Temperature dependence
• Presence of unpaired electrons
• Strength of attraction to a magnetic field
• Response to alternating fields

What is the calculated spin-only magnetic moment for a Cr²⁺ ion?

• 3.87 BM
• 4.80 BM
• 4.90 BM
• 5.92 BM

Which ion among the following is expected to be diamagnetic (have no unpaired electrons)?

• Fe²⁺
• Cr²⁺
• Zn²⁺
• Mn²⁺

What is the calculated spin-only magnetic moment for a V²⁺ ion?

• 2.84 BM
• 3.46 BM
• 3.87 BM
• 4.00 BM