Sodium, the element following neon in the periodic table, has one electron in its valence shell (n = 3). ... The atoms of the other noble gases also have eight electrons in their valence shells, so, like neon, they also do not form either a positive ion or a negative ion. In contrast, the atoms of many other elements tend to form ionic compounds, gaining or losing electrons until they have the same stableanbsp;...
|Title||:||Atoms, molecules, and reactions|
|Author||:||Ronald James Gillespie|