H
Hydrogen
Li
Lithium
Be
Beryllium
Na
Sodium
Mg
Magnesium
K
Potassium
Ca
Calcium
Rb
Rubidium
Sr
Strontium
Cs
Cesium
Ba
Barium
Fr
Francium
Ra
Radium
He
Helium
Ne
Neon
Ar
Argon
Kr
Krypton
Xe
Xenon
Rn
Radon
Lu
Lutetium
Lr
Lawrencium