Accuracy

helium, atom      5 Helium, atom

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    #  Species Formula
  8253 Bi2Br6Br6Bi2
  8254 Bi2Br6 (Geo)Br6Bi2
  8255 Bi2I4I4Bi2
  8256 Bi2I4 (Geo)I4Bi2
  8257 Bi2I6I6Bi2
  8258 Bi2I6 (Geo)I6Bi2
     1 Hydrogen, cationH
     2 Hydrogen, atomH
     3 Hydrogen (Geo)H2
     4 HydrogenH2
     5 Helium, atom He
     6 Lithium, cationLi
     7 Lithium, 2P(u) 2s(0) 2p(1)Li
     8 Lithium, atomLi
     9 Lithium hydride (Geo)HLi
    10 Lithium hydrideHLi
    11 Helium lithium cation (Geo)HeLi
    12 Lithium, dimer (Geo)Li2
    13 Lithium dimerLi2
    14 Beryllium, atomBe
    15 Beryllium hydride, cation (Geo)HBe


ΔHf: 0.0 kcal/mol,     REF: "CRC Handbook of Chemistry and Physics," 60th Edition, R. C. Weast, (Ed.), CRC Press, Boca Raton, FL, 1980.
  
 PM7
Helium, atom
 H=0.00 HR=CRC
 He     0.00000000 +0   0.00000000 +0   0.00000000 +0