Halogens
Fluorine, chlorine, bromine, iodine, and astatine.
Other Non-Metals
Nitrogen, hydrogen, oxygen, and sulfur.
Alkali Metals
Lithium, sodium, potassium, rubidium, cesium, and francium.
Alkaline Earth Metals
Magnesium, calcium, strontium, barium, and radium.
Noble/Inert Gases
Helium, neon, argon, krypton, xenon, and radon.