d and f BLOCK ELEMENTS Quiz

• The pharmaceutical industry
• The electronics industry
• The steel industry
• The pigment industry

• Melting pure iron and casting
• Adding large amounts of carbon only
• Reduction of iron oxides, removal of impurities, and addition of carbon and alloying metals.
• Electrolysis of iron ore

• As a catalyst
• As a pigment
• In steel production
• In dry battery cells

• Europium
• Ytterbium
• Lanthanum
• Cerium

• Lanthanoid contraction is physically larger.
• Actinoid contraction affects fewer elements.
• The chemistry of elements succeeding actinoids is less known.
• Lanthanoid contraction was discovered first.