d and f BLOCK ELEMENTS

What is the name of the element with atomic number 94 among the actinoids?

• Neptunium (Np)
• Plutonium (Pu)
• Americium (Am)
• Curium (Cm)

What is the name of the element with atomic number 99 among the actinoids?

• Fermium (Fm)
• Einsteinium (Es)
• Californium (Cf)
• Berkelium (Bk)

What compound is formed when lanthanoids react with hydrogen upon gentle heating?

• Hydroxides
• Hydrides
• Water
• Oxides

What is the range of standard electrode potentials for most lanthanoids (Ln3+ to Ln)?

• +2.2 to +2.4 V
• –2.2 to –2.4 V
• +2.0 V
• –2.0 V

What type of elements are the actinoids?

• s-block elements
• p-block elements
• d-block elements
• f-block elements