d and f BLOCK ELEMENTS

What is the common oxidation state of Europium (Eu) in its compounds, besides +3?

• +1
• +2
• +4
• +5

What is a characteristic property of the +4 oxidation state of Cerium (Ce) in aqueous solution?

• It is a strong reducing agent.
• It is a strong oxidizing agent.
• It is colourless.
• It is unstable.

What is the highest oxidation state commonly exhibited by Neptunium (Np)?

• +3
• +4
• +6
• +7

Which Actinoid commonly exhibits oxidation states ranging from +3 to +7?

• Actinium (Ac)
• Thorium (Th)
• Plutonium (Pu)
• Lawrencium (Lr)

Which Lanthanoid commonly exhibits both +3 and +4 oxidation states in its compounds?

• Lanthanum (La)
• Cerium (Ce)
• Neodymium (Nd)
• Promethium (Pm)