pper ▁|| ▁Trans ition ▁metal ▁|| ▁[ Ar ] ▁ 3 d 1 0 ▁ 4 s 1 ▁(* ) ▁| - ▁style =" background :# ccc ;" ▁|| ▁ 3 0 ▁|| ▁Z n ▁|| ▁Z inc ▁|| ▁Post - transition ▁metal ▁|| ▁[ Ar ] ▁ 3 d 1 0 ▁ 4 s 2 ▁| - ▁style =" background :# ccc ;" ▁|| ▁ 3 1 ▁|| ▁Ga ▁|| ▁Gal li um ▁|| ▁Post - transition ▁metal ▁|| ▁[ Ar ] ▁ 3 d 1 0 ▁ 4 s 2 ▁ 4 p 1 ▁| - ▁style =" background :# cc 9 ;" ▁|| ▁ 3 2 ▁|| ▁Ge ▁|| ▁German ium ▁|| ▁Metal lo id ▁|| ▁[ Ar ] ▁ 3 d 1 0 ▁ 4 s 2 ▁ 4 p 2 ▁| - ▁style =" background :# cc 9 ;" ▁|| ▁ 3 3 ▁|| ▁As ▁|| ▁Ar sen ic ▁|| ▁Metal lo id ▁|| ▁[ Ar ] ▁ 3 d 1 0 ▁ 4 s 2 ▁ 4 p 3 ▁| - ▁style =" background : ;" ▁|| ▁ 3 4 ▁|| ▁Se ▁|| ▁S elenium ▁|| ▁Re active ▁non met al ▁|| ▁[ Ar ] ▁ 3 d 1 0 ▁ 4 s 2 ▁ 4 p 4 ▁| - ▁style =" background : ;" ▁|| ▁ 3 5 ▁|| ▁Br ▁|| ▁B rom ine ▁|| ▁Re active ▁non met al ▁|| ▁[ Ar ] ▁ 3 d 1 0 ▁ 4 s 2 ▁ 4 p