Then list first 20 elements๐๐๐๐๐๐๐๐๐๐๐๐๐
too simple๐
hydrogen helium lithium beryllium boron carbon nitrogen oxygen fluorine neon sodium magnesium aluminium silicon phosphorus sulphur chlorine argon potassium calcium๐
hydrogen helium lithium beryllium boron carbon nitrogen oxygen fluorine neon sodium magnesium aluminium silicon phosphorus sulphur chlorine argon potassium calcium๐