d and f BLOCK ELEMENTS

Which of the following best describes the general electronic configuration pattern for actinoids?

• [Xe] 4f^n 5d^0-1 6s^2
• [Rn] 5f^n 6d^0-2 7s^2
• [Kr] 4d^n 5s^2
• [Rn] 6d^n 7s^2

Which of the following best describes the general electronic configuration pattern for lanthanoids?

• [Kr] 4d^n 5s^2
• [Xe] 4f^n 5d^0-1 6s^2
• [Rn] 5f^n 6d^0-1 7s^2
• [Xe] 5d^n 6s^2

What is the common stable oxidation state for the vast majority of lanthanoid elements?

• +1
• +2
• +3
• +4

What subshell is being filled in the actinoid series of elements?

• 4f
• 5f
• 6d
• 7s

What subshell is being filled in the lanthanoid series of elements?

• 3d
• 4f
• 5d
• 6s