H,Li,Na,K,Rb,Cs,Fr;Be,Mg,Ca,Sr,Ba,Ra;B,Al,Ga,In,Tl;C,Si,Ge,Sn,Pb;N,P,As,Sb,Bi;O,S,Se,Te,Po;F,Cl,Br,I,At;He,Ne,Ar,Kr,Xe,Rn.我背得了...要抽吗你？@陈明平
