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What is the maximum number of unpaired d electrons that an atom or ion can possess?
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What is the maximum number of unpaired d electrons that an atom or ion can possess?

User Ed Hintz
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Answer:

5

Step-by-step explanation:

The d subshell has 5 orbitals, each capable of holding a maximum of two electrons. Hund's rule tells us that every orbital in a sub-level must first be singly occupied by electrons before any orbital is doubly occupied. Therefore five electrons will fill the five orbitals within the d subshell.

User Meena
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