Accuracy

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1 Hydrogen, atom

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###  |  |
# | Species | Formula
1942 | 1,3-Diiodopropane | C3H6I2 |
1943 | 1,2-Diiodobutane | C4H8I2 |
1944 | 1,4-Diiodobutane | C4H8I2 |
1945 | 1,2-Diiodobenzene | C6H4I2 |
1946 | 1,2-Diiodobenzene (Geo) | C6H4I2 |
1947 | 5,7-Diiodo-8-hydroxyquinoline | C9H5NOI2 |
1948 | 1,2 Diiodotetrafluoroethane | C2F4I2 |
1949 | Iodoform (Geo) | HCI3 |
1950 | Iodoform | HCI3 |
1951 | Carbon tetraiodide (Geo) | CI4 |
1 | Hydrogen, atom | H |
2 | Hydrogen (Geo) | H2 |
3 | Hydrogen | H2 |
4 | Carbon, atom | C |
5 | Methylidyne | HC |
6 | Methylene, singlet (Geo) | CH2 |
7 | Methylene, triplet (Geo) | CH2 |
8 | Methylene, singlet | CH2 |
9 | Methyl, cation | CH3 |
10 | Methane (Geo) | CH4 |
11 | Methane | CH4 |

ΔHf: 52.1 kcal/mol

    Hydrogen, atom
     H=52.102 HR=CRC
      H     0.00000000 +0   0.00000000 +0   0.00000000 +0