Question
Jan Villaroel
Topic: Chemistry Posted 1 year ago
Calculate the number of unpaired electrons in the electron configuration of a ground-state chromium (Cr) atom.

Calculate the number of unpaired electrons in the electron configuration of a ground-state chromium (Cr) atom.


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Koala Tutor
Oct 4, 2023
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The electron configuration of a ground-state chromium (Cr) atom is 1s² 2s² 2p⁶ 3s² 3p⁶ 4s¹ 3d⁵.

To determine the number of unpaired electrons, we look at the 3d orbitals.

In the 3d subshell, there are 5 orbitals, each able to hold 2 electrons. Since there are 5 unpaired d electrons, the total number of unpaired electrons in a ground-state chromium atom is 5.

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