Li (u)  3! Sodium (Na)  11! Potasium (k)  19! Bryllum (Be)  4 Magnesium (Mg)  12! Calcium (Ca)  20! Boron (B)  5! Aluminium (Al)  13! Gallium (Ga)  31! Cabon (C)  6! Silicon (Si)  14! Germanium (Ge)  32! Nitrogen (N)  7! Phosphorus (P)  15! Arsenic (As)  33! Oxygen 
Lithium (u)3 ! Sodium (Na)11! Potasium(k)19 !bryllum (Be)4 magnesium (Mg)12 !calcium(Ca)20 !Bore (B) 5 ! ALuminium(AL)13 ! gallium(Ga)31! CAbone(C)6 !Silicium(Si)14 ! Germanium (Ge)32 ! Azote(N) 7 !Phosphore(P)15 ! Arsenic(As) 33! Oxign