Which of the following elements is a d-block element?

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Question: Which of the following elements is a d-block element?

Options:

Correct Answer: Iron

Solution:

Iron (Fe) is a d-block element as it has partially filled d-orbitals.

Which of the following elements is a d-block element?

Which of the following elements is a d-block element?

Step 1: Understand what d-block elements are. They are elements found in groups 3 to 12 of the periodic table.
Step 2: Identify the electron configuration of the elements in question. d-block elements have their outermost electrons in d-orbitals.
Step 3: Check if the element has partially filled d-orbitals. This means that not all d-orbital positions are filled with electrons.
Step 4: Look at the element Iron (Fe). Its electron configuration is [Ar] 4s2 3d6, which shows it has 6 electrons in the 3d orbital.
Step 5: Since Iron has partially filled d-orbitals, it is classified as a d-block element.

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