Which of the following elements belongs to the f-block of the periodic table?

• A. Ce
• B. Fe
• C. Br
• D. Al

Answer: (A)

Verified step by step guidance

1. Understand that the periodic table is divided into blocks based on the electron configuration of the elements: s-block, p-block, d-block, and f-block.
2. Recall that the f-block elements are also known as the inner transition metals, which include the lanthanides and actinides series.
3. Identify the element symbols given: Ce, Fe, Br, and Al, and recall their positions in the periodic table.
4. Recognize that Ce (Cerium) is a lanthanide, which places it in the f-block of the periodic table.
5. Confirm that Fe (Iron) is a d-block element, Br (Bromine) is a p-block element, and Al (Aluminum) is an s-block element, so only Ce belongs to the f-block.