Sulfur has 16 electrons, which are arranged in the following electronic configuration:

1s^2 2s^2 2p^6 3s^2 3p^4

This means that sulfur has two electrons in the first energy level, two electrons in the second energy level, and twelve electrons in the third energy level. The third energy level consists of two electrons in the 3s orbital and four electrons in the 3p orbitals.