Accuracy

tantalum, atom   7270 Tantalum, atom

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    #  Species Formula
  7260 Hafnium(IV) hexabromide (Geo)Br6Hf
  7261 Hafnium(I) iodideIHf
  7262 Hafnium(I) iodide (Geo)IHf
  7263 Trimethyl hafnium iodide (Geo)C3H9IHf
  7264 Trimethyl hafnium iodideC3H9IHf
  7265 Hafnium(IV) oxide diiodideOI2Hf
  7266 Hafnium(IV) hexaiodide, dianionI6Hf
  7267 Hafnium(IV) hexaiodide, dianion (Geo)I6Hf
  7268 Hafnium, dimerHf2
  7269 Tantalum, cationTa
  7270 Tantalum, atom Ta
  7271 Tantalum, anionTa
  7272 TaH3H3Ta
  7273 TaH3 (Geo)H3Ta
  7274 Pentamethyl tantalum(V)C5H15Ta
  7275 Pentamethyl tantalum(V) (Geo)C5H15Ta
  7276 Ta(V)(Me)5 (DOSCIX) (Geo)C5H15Ta
  7277 Ta(V)(Me)5 (DOSCIX)C5H15Ta
  7278 Tantalum, pentakis(dimethylamino)- (Geo)C10H30N5Ta
  7279 Ta(II)(NH3)6H18N6Ta
  7280 Ta(II)(NH3)6 (Geo)H18N6Ta


ΔHf: 186.9 kcal/mol,     REF: "CRC Handbook of Chemistry and Physics," 60th Edition, R. C. Weast, (Ed.), CRC Press, Boca Raton, FL, 1980.
  
 MS=1.5 OPEN(5,6) MECI PM7
Tantalum, atom
 H=186.9 HR=CRC
 Ta     0.00000000 +0   0.00000000 +0   0.00000000 +0