Respuesta :
The maximum number of unpaired d electrons that an atom or ion can possess is 5.
What is the maximum number of unpaired d electrons that an atom or ion can possess?
The maximum number of unpaired d electrons that an atom or ion can possess is 5.
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.
The maximum number of d electrons that an atom or ion can possess is 10.
The ions with the largest number of unpaired electrons are Gd3+ and Cm3+( has seven).
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