Cesium, Cs Francium, Fr (Hydrogen, H)* Lithium, Li Potassium, K Rubidium, Rb Sodium, Na
* Hydrogen is an exception. It is the only non-metal that belongs in Group IA. Hydrogen is not an alkali metal.
Cesium,
CsFrancium,
Fr(Hydrogen,
H)*Lithium,
Li Potassium,
K Rubidium,
Rb Sodium,
Na 