4,5,4,Pb2+ + 2I- -> Pb2I↓,50개,3,1,4,1,2,1,4,5,2,3,1,5,5,ㄱ,4,1,ㄱㄷㄹ,4,3,4,1,2,1,4,2,2,해설참조,해설참조 즐거운 하루 되세요~^^
당신은 어느 그룹입니까?