Chemistry Sodium Basics Cheat Sheet by 7kokcmax71 December 24, 2024 1. General Information Symbol: Na Atomic Number: 11 Atomic Mass: 22.99 u Group: 1 (Alkali Metals) Period: 3 Block: s-block Electron Configuration: 1s² 2s² 2p⁶ 3s¹ Valence Electrons: 1 Phase … Read more