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 58 - 71. Actinides are elements with atomic numbers 90 - 103.
• Europium (\(Eu\), atomic number 63), cerium (\(Ce\), atomic number 58), terbium (\(Tb\), atomic number 65) are in the range of lanthanides.
• Californium (\(Cf\), atomic number 98), nobelium (\(No\), atomic number 102), uranium (\(U\), atomic number 92) are in the range of actinides.

Answer:

• Lanthanides: europium, cerium, terbium.
• Actinides: californium, nobelium, uranium.