Here's why:

* Atomic Number: Sulfur's atomic number is 16, meaning it has 16 protons and 16 electrons.

* Electron Configuration: The electron configuration of sulfur is 2, 8, 6. This means:

* The first shell (n=1) has 2 electrons.

* The second shell (n=2) has 8 electrons.

* The third shell (n=3) has 6 electrons.

* Outer Shell: The third shell is the outer shell for sulfur, and it contains 6 electrons.