d and f BLOCK ELEMENTS

What is a consequence of the lanthanoid contraction mentioned in the text?

• It makes lanthanoids highly radioactive
• It simplifies the separation of lanthanoids
• It has far reaching consequences in the chemistry of succeeding elements
• It increases the stability of +2 oxidation states

Which orbitals are progressively filled in the elements of the f-block?

• 3d and 4d orbitals
• 4s and 5s orbitals
• 4f and 5f orbitals
• 5d and 6d orbitals

What is the primary block location for transition elements in the periodic table?

• Groups 1-2
• Groups 3-12
• Groups 13-18
• Groups 1-18

What type of ions do lanthanoids typically form when reacting with water?

• +1 ions
• +2 ions
• +3 ions
• +4 ions

What general property do lanthanum and lanthanoids possess as metals?

• They are hard black metals
• They are soft white metals
• They are liquid at room temperature
• They are highly magnetic