Eu (3+)（氧化铕中的铕，Z=63）..............................................................................................149 F (-)（氟化锂中的氟，Z=9）......................................................................................................155 Fe o（铁金属，Z=26）......................................................................................................................159 Ga o（镓金属，Z=31）......................................................................................................................163 Gd o（钆金属，Z=64）......................................................................................................................169 Ge o（锗金属，Z=32）......................................................................................................................173 Hf o（铪金属，Z=72）......................................................................................................................178 Hg o（汞金属，Z=80）......................................................................................................................182 Ho o（钬金属，Z=67）......................................................................................................................186 I (-)（碘钾碘化物，Z=53)...................................................................................................190 In o (铟金属，Z=49)....................................................................................................................196 Ir o (铱金属，Z=77)...................................................................................................................200 K (+) (氯化钾中的钾，Z=19)......................................................................................................204 Kr (+) (碳中氪，Z=36)......................................................................................................210 La (3+) (氧化镧中的镧，Z=57)......................................................................................................213 Li (+) (氢氧化锂中的锂，Z=3)......................................................................................................219 Lu o (镥金属，Z=71)......................................................................................................................224 Mg o (镁金属，Z=12)......................................................................................................................228 Mn o (锰金属， Z=25)......................................................................................................................233 Mo o（金属钼，Z=42）..................................................................................................................237 N (3-)（氮化硼中的氮，Z=7）..................................................................................................241 Na (+)（氯化钠中的钠，Z=11）........................................................................................247