차례대로3/5/3/1/3/3/5/4/5/3/5/2/4,5/3/5/5/B,C/2/ㄱ,ㄴ,ㄹ/2/3/(+)극:CL-NO3-,(-)극:CU2+,K+/2/4/4/4/4입니다.44쪽이어디번호까지인지몰라45쪽도알려드렸어요
당신은 어느 그룹입니까?