各元素的化合价1－－20号,Fe,Mn,I,Br,Ba等越多越好

1 2 1 2 3 2 23 3 2 3 1 3 1 3 2

H:-1,0,+1He:0Li:0,+1,+3Be:0,+2B:0,+3C:-4,0,+2,+4N:-3,-2,0,+1,+2,+3,+4,+5O:-2,-1,-1/2,-1/3,-1/4,0,+2F:-1,0Ne:0Na:0,+1Mg,Ca,Ba:0,+2Al:0+3Si:-4,0,+2,+4P:-3,-2,0,+3,+5S:-2,0,+2,+4,+6Cl,Br,I:-1,0,+1,+3,+5,...