Periodic table chart
Electron affinity chart
Electron affinity is the energy released when a neutral atom in the gas phase gains an electron to form a negative ion, in electronvolts (eV). A larger value means the atom holds the extra electron more strongly.
Download chart
- 1H0.75
- 2He—
- 3Li0.62
- 4Be—
- 5B0.28
- 6C1.26
- 7N—
- 8O1.46
- 9F3.34
- 10Ne—
- 11Na0.55
- 12Mg—
- 13Al0.44
- 14Si1.39
- 15P0.75
- 16S2.08
- 17Cl3.62
- 18Ar—
- 19K0.5
- 20Ca—
- 21Sc0.19
- 22Ti0.08
- 23V0.53
- 24Cr0.67
- 25Mn—
- 26Fe0.16
- 27Co0.66
- 28Ni1.16
- 29Cu1.23
- 30Zn—
- 31Ga0.3
- 32Ge1.35
- 33As0.81
- 34Se2.02
- 35Br3.37
- 36Kr—
- 37Rb0.47
- 38Sr—
- 39Y0.31
- 40Zr0.43
- 41Nb0.89
- 42Mo0.75
- 43Tc0.55
- 44Ru1.05
- 45Rh1.14
- 46Pd0.56
- 47Ag1.3
- 48Cd—
- 49In0.3
- 50Sn1.2
- 51Sb1.07
- 52Te1.97
- 53I3.06
- 54Xe—
- 55Cs0.47
- 56Ba—
- 57La0.5
- 58Ce0.5
- 59Pr—
- 60Nd—
- 61Pm—
- 62Sm—
- 63Eu—
- 64Gd—
- 65Tb—
- 66Dy—
- 67Ho—
- 68Er—
- 69Tm—
- 70Yb—
- 71Lu—
- 72Hf—
- 73Ta0.32
- 74W0.82
- 75Re0.15
- 76Os1.1
- 77Ir1.57
- 78Pt2.13
- 79Au2.31
- 80Hg—
- 81Tl0.2
- 82Pb0.36
- 83Bi0.95
- 84Po1.9
- 85At2.8
- 86Rn—
- 87Fr0.47
- 88Ra—
- 89Ac—
- 90Th—
- 91Pa—
- 92U—
- 93Np—
- 94Pu—
- 95Am—
- 96Cm—
- 97Bk—
- 98Cf—
- 99Es—
- 100Fm—
- 101Md—
- 102No—
- 103Lr—
- 104Rf—
- 105Db—
- 106Sg—
- 107Bh—
- 108Hs—
- 109Mt—
- 110Ds—
- 111Rg—
- 112Cn—
- 113Nh—
- 114Fl—
- 115Mc—
- 116Lv—
- 117Ts—
- 118Og—
LowHigh(eV)
No dataThe trend
Electron affinity generally grows across a period toward the halogens, which have the highest values. Chlorine, not fluorine, has the largest: fluorine is so small that the added electron is crowded by the ones already there. The noble gases and several other elements form no stable negative ion, so they have no value here.
Highest
- Chlorine (Cl)3.62 eV
- Bromine (Br)3.37 eV
- Fluorine (F)3.34 eV
- Iodine (I)3.06 eV
- Astatine (At)2.8 eV
Lowest
- Titanium (Ti)0.08 eV
- Rhenium (Re)0.15 eV
- Iron (Fe)0.16 eV
- Scandium (Sc)0.19 eV
- Thallium (Tl)0.2 eV
Electron affinity of every element
| No. | Element | Electron affinity (eV) |
|---|---|---|
| 1 | Hydrogen (H) | 0.75 |
| 2 | Helium (He) | — |
| 3 | Lithium (Li) | 0.62 |
| 4 | Beryllium (Be) | — |
| 5 | Boron (B) | 0.28 |
| 6 | Carbon (C) | 1.26 |
| 7 | Nitrogen (N) | — |
| 8 | Oxygen (O) | 1.46 |
| 9 | Fluorine (F) | 3.34 |
| 10 | Neon (Ne) | — |
| 11 | Sodium (Na) | 0.55 |
| 12 | Magnesium (Mg) | — |
| 13 | Aluminium (Al) | 0.44 |
| 14 | Silicon (Si) | 1.39 |
| 15 | Phosphorus (P) | 0.75 |
| 16 | Sulfur (S) | 2.08 |
| 17 | Chlorine (Cl) | 3.62 |
| 18 | Argon (Ar) | — |
| 19 | Potassium (K) | 0.5 |
| 20 | Calcium (Ca) | — |
| 21 | Scandium (Sc) | 0.19 |
| 22 | Titanium (Ti) | 0.08 |
| 23 | Vanadium (V) | 0.53 |
| 24 | Chromium (Cr) | 0.67 |
| 25 | Manganese (Mn) | — |
| 26 | Iron (Fe) | 0.16 |
| 27 | Cobalt (Co) | 0.66 |
| 28 | Nickel (Ni) | 1.16 |
| 29 | Copper (Cu) | 1.23 |
| 30 | Zinc (Zn) | — |
| 31 | Gallium (Ga) | 0.3 |
| 32 | Germanium (Ge) | 1.35 |
| 33 | Arsenic (As) | 0.81 |
| 34 | Selenium (Se) | 2.02 |
| 35 | Bromine (Br) | 3.37 |
| 36 | Krypton (Kr) | — |
| 37 | Rubidium (Rb) | 0.47 |
| 38 | Strontium (Sr) | — |
| 39 | Yttrium (Y) | 0.31 |
| 40 | Zirconium (Zr) | 0.43 |
| 41 | Niobium (Nb) | 0.89 |
| 42 | Molybdenum (Mo) | 0.75 |
| 43 | Technetium (Tc) | 0.55 |
| 44 | Ruthenium (Ru) | 1.05 |
| 45 | Rhodium (Rh) | 1.14 |
| 46 | Palladium (Pd) | 0.56 |
| 47 | Silver (Ag) | 1.3 |
| 48 | Cadmium (Cd) | — |
| 49 | Indium (In) | 0.3 |
| 50 | Tin (Sn) | 1.2 |
| 51 | Antimony (Sb) | 1.07 |
| 52 | Tellurium (Te) | 1.97 |
| 53 | Iodine (I) | 3.06 |
| 54 | Xenon (Xe) | — |
| 55 | Caesium (Cs) | 0.47 |
| 56 | Barium (Ba) | — |
| 57 | Lanthanum (La) | 0.5 |
| 58 | Cerium (Ce) | 0.5 |
| 59 | Praseodymium (Pr) | — |
| 60 | Neodymium (Nd) | — |
| 61 | Promethium (Pm) | — |
| 62 | Samarium (Sm) | — |
| 63 | Europium (Eu) | — |
| 64 | Gadolinium (Gd) | — |
| 65 | Terbium (Tb) | — |
| 66 | Dysprosium (Dy) | — |
| 67 | Holmium (Ho) | — |
| 68 | Erbium (Er) | — |
| 69 | Thulium (Tm) | — |
| 70 | Ytterbium (Yb) | — |
| 71 | Lutetium (Lu) | — |
| 72 | Hafnium (Hf) | — |
| 73 | Tantalum (Ta) | 0.32 |
| 74 | Tungsten (W) | 0.82 |
| 75 | Rhenium (Re) | 0.15 |
| 76 | Osmium (Os) | 1.1 |
| 77 | Iridium (Ir) | 1.57 |
| 78 | Platinum (Pt) | 2.13 |
| 79 | Gold (Au) | 2.31 |
| 80 | Mercury (Hg) | — |
| 81 | Thallium (Tl) | 0.2 |
| 82 | Lead (Pb) | 0.36 |
| 83 | Bismuth (Bi) | 0.95 |
| 84 | Polonium (Po) | 1.9 |
| 85 | Astatine (At) | 2.8 |
| 86 | Radon (Rn) | — |
| 87 | Francium (Fr) | 0.47 |
| 88 | Radium (Ra) | — |
| 89 | Actinium (Ac) | — |
| 90 | Thorium (Th) | — |
| 91 | Protactinium (Pa) | — |
| 92 | Uranium (U) | — |
| 93 | Neptunium (Np) | — |
| 94 | Plutonium (Pu) | — |
| 95 | Americium (Am) | — |
| 96 | Curium (Cm) | — |
| 97 | Berkelium (Bk) | — |
| 98 | Californium (Cf) | — |
| 99 | Einsteinium (Es) | — |
| 100 | Fermium (Fm) | — |
| 101 | Mendelevium (Md) | — |
| 102 | Nobelium (No) | — |
| 103 | Lawrencium (Lr) | — |
| 104 | Rutherfordium (Rf) | — |
| 105 | Dubnium (Db) | — |
| 106 | Seaborgium (Sg) | — |
| 107 | Bohrium (Bh) | — |
| 108 | Hassium (Hs) | — |
| 109 | Meitnerium (Mt) | — |
| 110 | Darmstadtium (Ds) | — |
| 111 | Roentgenium (Rg) | — |
| 112 | Copernicium (Cn) | — |
| 113 | Nihonium (Nh) | — |
| 114 | Flerovium (Fl) | — |
| 115 | Moscovium (Mc) | — |
| 116 | Livermorium (Lv) | — |
| 117 | Tennessine (Ts) | — |
| 118 | Oganesson (Og) | — |