d and f BLOCK ELEMENTS

What is the primary reason the 'spin-only' formula is applicable for first-row transition metal compounds?

• They have no unpaired electrons
• They are always in solution
• Orbital angular momentum contribution is quenched
• They are highly paramagnetic

Which of the following best describes the magnetic behavior of Sc³⁺?

• Paramagnetic with 1.73 BM
• Paramagnetic with 2.84 BM
• Diamagnetic with zero magnetic moment
• Ferromagnetic

What is the calculated spin-only magnetic moment for an ion with 2 unpaired electrons?

• 1.73 BM
• 2.00 BM
• 2.84 BM
• 3.46 BM

According to the text, what is the magnetic moment of a single unpaired electron?

• 1.00 Bohr magneton
• 1.41 Bohr magnetons
• 1.73 Bohr magnetons
• 2.00 Bohr magnetons

What is the electronic configuration of a V²⁺ ion?

• 3d¹
• 3d²
• 3d³
• 3d⁴