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Which of the following pairs are f-block elements? (2023)

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Question: Which of the following pairs are f-block elements? (2023)

Options:

  1. Zinc and Cadmium
  2. Lanthanum and Cerium
  3. Iron and Cobalt
  4. Copper and Silver

Correct Answer: Lanthanum and Cerium

Exam Year: 2023

Solution: 

Lanthanum (La) and Cerium (Ce) are both f-block elements, belonging to the lanthanide series.

Which of the following pairs are f-block elements? (2023)

Practice Questions

Q1
Which of the following pairs are f-block elements? (2023)
  1. Zinc and Cadmium
  2. Lanthanum and Cerium
  3. Iron and Cobalt
  4. Copper and Silver

Questions & Step-by-Step Solutions

Which of the following pairs are f-block elements? (2023)
  • Step 1: Understand what f-block elements are. They are elements that have their last electrons filling the f-orbitals.
  • Step 2: Identify the lanthanide series, which includes elements from Lanthanum (La) to Lutetium (Lu).
  • Step 3: Recognize that Lanthanum (La) and Cerium (Ce) are part of the lanthanide series.
  • Step 4: Confirm that both Lanthanum (La) and Cerium (Ce) are indeed f-block elements.
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