Here's why:

* Physical Properties: Sulfur is a brittle, yellow solid at room temperature. It's a poor conductor of heat and electricity.

* Chemical Properties: Sulfur readily forms compounds with other elements, particularly oxygen. It is a good oxidizer and is not typically found in its elemental form in nature.

* Location on the Periodic Table: Sulfur is located in Group 16 (VIA) of the periodic table, which is the group that contains all the nonmetals.

Let me know if you have any other questions!