Which electron configuration represents the electrons in an atom of sulfur in an excited state? (1) 2 – 8 – 6 (2) 2 – 7 – 7 (3) 2 – 8 – 7 (4) 2 – 7 – 8 Explanation: We must first look at the Periodic Table on the Reference Table, and find Sulfur. Sulfur's electron configuration is 2-8-6 according to the Reference Table. An excited state is a state in which an electron jumps to a higher energy level, while the ground state is the lowest energy most stable state for electrons.

We can look at the Regent Reference Table Q, that is titled "Homologous Series of Hydrocarbons" to figure out the answer to this question.

Which statement describes a chemical property of iron? (1) Iron oxidizes. (2) Iron is a solid at STP. (3) Iron melts. (4) Iron is attracted

All elements on the periodic table (except H and He) follow the octet rule that states that atoms want to have an octet (eight) electrons in