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Which of the following has an incomplete d-subshell?

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Question: Which of the following has an incomplete d-subshell?

Options:

  1. Scandium
  2. Titanium
  3. Vanadium
  4. Chromium

Correct Answer: Chromium

Solution: 

Chromium (Cr) has an electronic configuration of [Ar] 4s1 3d5, which means it has an incomplete d-subshell.

Which of the following has an incomplete d-subshell?

Practice Questions

Q1
Which of the following has an incomplete d-subshell?
  1. Scandium
  2. Titanium
  3. Vanadium
  4. Chromium

Questions & Step-by-Step Solutions

Which of the following has an incomplete d-subshell?
Correct Answer: Chromium (Cr)
  • Step 1: Understand what a d-subshell is. The d-subshell can hold a maximum of 10 electrons.
  • Step 2: Know the electronic configuration of elements. This tells us how many electrons are in each subshell.
  • Step 3: Look at the electronic configuration of Chromium (Cr). It is [Ar] 4s1 3d5.
  • Step 4: Identify the d-subshell in the configuration. In Chromium, the d-subshell is 3d.
  • Step 5: Count the electrons in the d-subshell. Chromium has 5 electrons in the 3d subshell.
  • Step 6: Determine if the d-subshell is complete. Since the maximum is 10 electrons and Chromium has 5, the d-subshell is incomplete.
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