Here's how to figure that out:

* Electron Configuration: The electron configuration of sulfur is 1s² 2s² 2p⁶ 3s² 3p⁴.

* Valence Electrons: Valence electrons are the electrons in the outermost shell of an atom. In sulfur's case, the outermost shell is the 3rd shell (3s² 3p⁴), which contains a total of 6 electrons.