Which Atom Can Have More Than 8 Valence Electrons?

Which Atom Can Have More Than 8 Valence Electrons? Sulfur, phosphorus, silicon, and chlorine are common examples of elements that form an expanded octet. Phosphorus pentachloride (PCl5) and sulfur hexafluoride (SF6) are examples of molecules that deviate from the octet rule Can you have more than 8 valence electron? octet rule: Atoms lose, gain, or