Tuliskan unsur dari : A.Golongan Alkali B.Golongan Alkali tanah C.Golongan Gas mulia

A.) Logam Alkali (IA)
H (hidrogen), Li (litium), Na (Natrium), K (kalium), Rb (rubidium), Cs (sesium), Fr (fransium).

b.) Logam Alkali Tanah (IIA)
Be (berilium), Mg (magnesium), Ca (kalsium), Sr (strontium), Ba (barium), Ra (radium).

c.) Gas Mulia (VIIIA)
He (helium), Ne (neon), Ar (Argon), Kr (kripton), Xe (xeon), Rn (radon), dan
Uuo (ununoktium (belum diteliti secara ilmiah lbh lanjut, blm dinamai))