Chemistry Practice Problems Paramagnetic and Diamagnetic Practice Problems Solution: How many unpaired electrons does an atom of sulfur...

Solution: How many unpaired electrons does an atom of sulfur have in its ground state?

Problem

How many unpaired electrons does an atom of sulfur have in its ground state?

Solution

We are being asked how many electrons are unpaired in the ground-state electron configuration of S. Write the electron configuration of a neutral (uncharged) S atom.

Ground-state means that Sulfur is in its lowest energy form (not in an excited state). 

Neutral element:       Atomic number = # protons = # of electrons

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