Sodium Chloride

Sodium chloride has ionic bonding.Sodium has 11 protons and 11 electrons. The electronic configuration is:1s² 2s² 2p⁶ 3s¹Chlorine has 17 protons and 17 electrons. The electronic configuration is:1s² 2s² 2p⁶ 3s² 3p⁵A sodium atom transfers its outer main level electron to a chlorine atom. The outer electron moves into the outer main level of the chlorine atom. Its outer main level is now full.Sodium becomes a positive Na⁺ +1 ion and chlorine becomes a negative Cl^- -1 ion.The two ions form an ionic bond (electrostatic attraction).