Electron Affinity
| Atom | Atomic No. | 1st EA (kJ/mol) | 2nd EA (kJ/mol) | 3rd EA (kJ/mol) |
|---|---|---|---|---|
| H | 1 | -72.77 | ||
| He | 2 | 48.24 | ||
| Li | 3 | -59.63 | ||
| Be | 4 | 48.24 | ||
| B | 5 | -26.73 | ||
| C | 6 | -121.85 | ||
| N | 7 | 6.75 | 673 | 1070 |
| O | 8 | -140.98 | 744 | |
| F | 9 | -327.95 | ||
| Ne | 10 | 115.78 | ||
| Na | 11 | -52.87 | ||
| Mg | 12 | 38.59 | ||
| Al | 13 | -42.55 | ||
| Si | 14 | -133.63 | ||
| P | 15 | -72.03 | 468 | 886 |
| S | 16 | -200.41 | ||
| Cl | 17 | -348.99 | ||
| Ar | 18 | 96.49 | ||
| K | 19 | -48.38 | ||
| Ca | 20 | -2.37 | ||
| Sc | 21 | -18.14 | ||
| Ti | 22 | -7.62 | ||
| V | 23 | -50.65 | ||
| Cr | 24 | -64.26 | ||
| Mn | 25 | 115.78 | ||
| Fe | 26 | -15.73 | ||
| Co | 27 | -63.78 | ||
| Ni | 28 | -111.54 | ||
| Cu | 29 | -118.48 | ||
| Zn | 30 | 57.89 | ||
| Ga | 31 | -28.95 | ||
| Ge | 32 | -115.78 | ||
| As | 33 | -78.15 | ||
| Se | 34 | -194.97 | ||
| Br | 35 | -324.67 | ||
| Kr | 36 | 96.49 | ||
| Rb | 37 | -46.88 | ||
| Sr | 38 | 48.24 | ||
| Y | 39 | -29.62 | ||
| Zr | 40 | -41.10 | ||
| Nb | 41 | -86.16 | ||
| Mo | 42 | -71.98 | ||
| Tc | 43 | -53.07 | ||
| Ru | 44 | -101.31 | ||
| Rh | 45 | -109.70 | ||
| Pd | 46 | -53.74 | ||
| Ag | 47 | -125.62 | ||
| Cd | 48 | 67.54 | ||
| In | 49 | -28.95 | ||
| Sn | 50 | -115.78 | ||
| Sb | 51 | -103.24 | ||
| Te | 52 | -190.15 | ||
| I | 53 | -295.16 | ||
| Xe | 54 | 77.19 | ||
| Cs | 55 | -45.51 | ||
| Ba | 56 | 28.95 | ||
| La | 57 | -48.24 | ||
| Ce | 58 | |||
| Pr | 59 | |||
| Nd | 60 | |||
| Pm | 61 | |||
| Sm | 62 | |||
| Eu | 63 | |||
| Gd | 64 | |||
| Tb | 65 | |||
| Dy | 66 | |||
| Ho | 67 | |||
| Er | 68 | |||
| Tm | 69 | |||
| Yb | 70 | |||
| Lu | 71 | 0.00 | ||
| Hf | 72 | -9.65 | ||
| Ta | 73 | -31.07 | ||
| W | 74 | -78.64 | ||
| Re | 75 | -14.47 | ||
| Os | 76 | -106.13 | ||
| Ir | 77 | -151.00 | ||
| Pt | 78 | -205.32 | ||
| Au | 79 | -222.75 | ||
| Hg | 80 | 48.24 | ||
| Tl | 81 | -19.30 | ||
| Pb | 82 | -35.12 | ||
| Bi | 83 | -91.28 | ||
| Po | 84 | -183.32 | ||
| At | 85 | -270.16 | ||
| Rn | 86 | 67.54 | ||
| Fr | 87 | |||
| Ra | 88 | |||
| Ac | 89 | |||
| Th | 90 | |||
| Pa | 91 | |||
| U | 92 | |||
| Np | 93 | |||
| Pu | 94 | |||
| Am | 95 | |||
| Cm | 96 | |||
| Bk | 97 | |||
| Cf | 98 | |||
| Es | 99 | |||
| Fm | 100 | |||
| Md | 101 | |||
| No | 102 | |||
| Lr | 103 | |||
| Anderson, T.; Haugen, H. K.; and Hotop, W.. J. Phys. Chem. Ref. Data 1999, 28(6), 1526-1527. Bratsch, Steven G.; Lagowski, J. J. Polyhedron 1986, 5, 1763-1770. Note that in this table the convention is that EA = ΔE when an electron is added to an atom to form a negative ion. |
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