1，氧化性：
f2+h2=2hf
f2+e(过量)=ef2
2f2(过量)+e=ef4
nf2+2m=2mfn(表示大部分金属)
2f2+2h2o=4hf+o2
2f2+2naoh=2naf+of2+h2o
f2+2nacl=2naf+cl2
f2+2nabr=2naf+br2
f2+2nai=2naf+i2
f2+cl2(等体积)=2clf
3f2(过量)+cl2=2clf3
7f2(过量)+i2=2if7
cl2+h2=2hcl
3cl2+2p=2pcl3
cl2+pcl3=pcl5
cl2+2na=2nacl
3cl2+2fe=2fecl3
cl2+2fecl2=2fecl3
cl2+cu=c