Question

1. make and use tables use the periodic table to classify each of the following as a lanthanide or actinide: californium, europium, cerium, nobelium, terbium, uranium.

Explanation:

• Lanthanides are elements with atomic numbers 57 - 71. Actinides are elements with atomic numbers 89 - 103.
• Californium (\(Cf\), atomic number 98) is in the actinide series.
• Europium (\(Eu\), atomic number 63) is in the lanthanide series.
• Cerium (\(Ce\), atomic number 58) is in the lanthanide series.
• Nobelium (\(No\), atomic number 102) is in the actinide series.
• Terbium (\(Tb\), atomic number 65) is in the lanthanide series.
• Uranium (\(U\), atomic number 92) is in the actinide series.

Answer:

• Lanthanides: europium (\(Eu\)), cerium (\(Ce\)), terbium (\(Tb\)).
• Actinides: californium (\(Cf\)), nobelium (\(No\)), uranium (\(U\)).