Chemistry Argon Basics Cheat Sheet by 7kokcmax71 December 24, 2024 1. General Information Symbol: Ar Atomic Number: 18 Atomic Mass: 39.95 u Group: 18 (Noble Gases) Period: 3 Block: p-block Electron Configuration: 1s² 2s² 2p⁶ 3s² 3p⁶ Valence Electrons: 8 … Read more
