Question

How many unpaired electrons are in a sulfer atom?

Answer 1

2

Explanation:

If we look at the electron configuration of sulfur (`1s^2 2s^2 2p^6 3s^2 3p^4`). Since the third p orbital holds the maximum of 6 electrons and sulfur only have 4 this means that sulfur have 2 unpaired electrons.

This is why disulfur have a double bond between two sulfur atoms.