d and f BLOCK ELEMENTS

Which ion listed in Table 4.7 has a calculated spin-only magnetic moment of 5.92 BM?

• Cr²⁺
• Fe²⁺
• Mn²⁺
• Co²⁺

What is the calculated spin-only magnetic moment for an ion with 4 unpaired electrons?

• 3.87 BM
• 4.40 BM
• 4.90 BM
• 5.30 BM

Based on the trend in Table 4.7, which ion configuration is likely to show the smallest difference between calculated and observed magnetic moments?

• 3d⁰ or 3d¹⁰
• 3d¹ or 3d⁹
• 3d⁴ or 3d⁶
• 3d⁵

Which of the following best describes the relationship between the calculated and observed magnetic moments in Table 4.7?

• They are always identical
• Calculated moments are always higher
• Observed moments can differ from calculated moments, sometimes significantly.
• Calculated moments are only approximate

What is the calculated spin-only magnetic moment for an ion with 1 unpaired electron?

• 1.00 BM
• 1.41 BM
• 1.73 BM
• 2.00 BM