d and f BLOCK ELEMENTS

What is the typical oxidation state for elements like Copper and Zinc at the end of the 3d series?

• Highly variable, like Manganese
• Limited, often only one
• Always zero
• Always the maximum possible

Why is Scandium(III) the predominant oxidation state for Scandium?

• It has the highest charge density
• It achieves a noble gas electron configuration
• It is the most electronegative
• It forms the strongest ionic bonds

Which of the following is an example of a transition metal in a zero oxidation state?

• Fe in FeCl₃
• Fe in Fe(CO)₅
• Fe in FeO
• Fe in Fe₂O₃

What is the sum of the s and d electrons for Manganese (Mn)?

• 5
• 6
• 7
• 8

Why does the text mention that low oxidation states are found with ligands capable of π-acceptor character?

• These ligands are small
• These ligands are highly electronegative
• These ligands can stabilize the high electron density on the metal
• These ligands only form ionic bonds