H
Hydrogen
Li
Lithium
Sodium
Na
Potassium
K
Rb
Rubidium
Cs
Caesium
Fr
Francium
Na
Sodium
K
Potassium
Lithium
Li
Hydrogen
H
Be
Beryllium
Mg
Magnesium
Ca
Calcium
Sr
Strontium
Francium
Fr
Caesium
Cs
Beryllium
Be
Ba
Barium
Ra
Radium
Calcium
Ca
Barium
Ba
Ra
Radium