元素周期表图表
元素电子亲和能表
电子亲和能是气态中性原子获得一个电子形成阴离子时释放的能量，以电子伏特（eV）表示。数值越大，原子对多出的电子束缚越强。
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- 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—
低高(eV)
无数据变化趋势
电子亲和能在同一周期中大体向卤素方向增大，卤素的数值最高。数值最大的是氯而不是氟：氟原子太小，新加入的电子与原有电子挤在一起。稀有气体和其他一些元素不能形成稳定的阴离子，因此这里没有数值。
全部元素的电子亲和能
| 序号 | 元素 | 电子亲和能 (eV) |
|---|---|---|
| 1 | 氢 (H) | 0.75 |
| 2 | 氦 (He) | — |
| 3 | 锂 (Li) | 0.62 |
| 4 | 铍 (Be) | — |
| 5 | 硼 (B) | 0.28 |
| 6 | 碳 (C) | 1.26 |
| 7 | 氮 (N) | — |
| 8 | 氧 (O) | 1.46 |
| 9 | 氟 (F) | 3.34 |
| 10 | 氖 (Ne) | — |
| 11 | 钠 (Na) | 0.55 |
| 12 | 镁 (Mg) | — |
| 13 | 铝 (Al) | 0.44 |
| 14 | 硅 (Si) | 1.39 |
| 15 | 磷 (P) | 0.75 |
| 16 | 硫 (S) | 2.08 |
| 17 | 氯 (Cl) | 3.62 |
| 18 | 氩 (Ar) | — |
| 19 | 钾 (K) | 0.5 |
| 20 | 钙 (Ca) | — |
| 21 | 钪 (Sc) | 0.19 |
| 22 | 钛 (Ti) | 0.08 |
| 23 | 钒 (V) | 0.53 |
| 24 | 铬 (Cr) | 0.67 |
| 25 | 锰 (Mn) | — |
| 26 | 铁 (Fe) | 0.16 |
| 27 | 钴 (Co) | 0.66 |
| 28 | 镍 (Ni) | 1.16 |
| 29 | 铜 (Cu) | 1.23 |
| 30 | 锌 (Zn) | — |
| 31 | 镓 (Ga) | 0.3 |
| 32 | 锗 (Ge) | 1.35 |
| 33 | 砷 (As) | 0.81 |
| 34 | 硒 (Se) | 2.02 |
| 35 | 溴 (Br) | 3.37 |
| 36 | 氪 (Kr) | — |
| 37 | 铷 (Rb) | 0.47 |
| 38 | 锶 (Sr) | — |
| 39 | 钇 (Y) | 0.31 |
| 40 | 锆 (Zr) | 0.43 |
| 41 | 铌 (Nb) | 0.89 |
| 42 | 钼 (Mo) | 0.75 |
| 43 | 锝 (Tc) | 0.55 |
| 44 | 钌 (Ru) | 1.05 |
| 45 | 铑 (Rh) | 1.14 |
| 46 | 钯 (Pd) | 0.56 |
| 47 | 银 (Ag) | 1.3 |
| 48 | 镉 (Cd) | — |
| 49 | 铟 (In) | 0.3 |
| 50 | 锡 (Sn) | 1.2 |
| 51 | 锑 (Sb) | 1.07 |
| 52 | 碲 (Te) | 1.97 |
| 53 | 碘 (I) | 3.06 |
| 54 | 氙 (Xe) | — |
| 55 | 铯 (Cs) | 0.47 |
| 56 | 钡 (Ba) | — |
| 57 | 镧 (La) | 0.5 |
| 58 | 铈 (Ce) | 0.5 |
| 59 | 镨 (Pr) | — |
| 60 | 钕 (Nd) | — |
| 61 | 钷 (Pm) | — |
| 62 | 钐 (Sm) | — |
| 63 | 铕 (Eu) | — |
| 64 | 钆 (Gd) | — |
| 65 | 铽 (Tb) | — |
| 66 | 镝 (Dy) | — |
| 67 | 钬 (Ho) | — |
| 68 | 铒 (Er) | — |
| 69 | 铥 (Tm) | — |
| 70 | 镱 (Yb) | — |
| 71 | 镥 (Lu) | — |
| 72 | 铪 (Hf) | — |
| 73 | 钽 (Ta) | 0.32 |
| 74 | 钨 (W) | 0.82 |
| 75 | 铼 (Re) | 0.15 |
| 76 | 锇 (Os) | 1.1 |
| 77 | 铱 (Ir) | 1.57 |
| 78 | 铂 (Pt) | 2.13 |
| 79 | 金 (Au) | 2.31 |
| 80 | 汞 (Hg) | — |
| 81 | 铊 (Tl) | 0.2 |
| 82 | 铅 (Pb) | 0.36 |
| 83 | 铋 (Bi) | 0.95 |
| 84 | 钋 (Po) | 1.9 |
| 85 | 砹 (At) | 2.8 |
| 86 | 氡 (Rn) | — |
| 87 | 钫 (Fr) | 0.47 |
| 88 | 镭 (Ra) | — |
| 89 | 锕 (Ac) | — |
| 90 | 钍 (Th) | — |
| 91 | 镤 (Pa) | — |
| 92 | 铀 (U) | — |
| 93 | 镎 (Np) | — |
| 94 | 钚 (Pu) | — |
| 95 | 镅 (Am) | — |
| 96 | 锔 (Cm) | — |
| 97 | 锫 (Bk) | — |
| 98 | 锎 (Cf) | — |
| 99 | 锿 (Es) | — |
| 100 | 镄 (Fm) | — |
| 101 | 钔 (Md) | — |
| 102 | 锘 (No) | — |
| 103 | 铹 (Lr) | — |
| 104 | 𬬻 (Rf) | — |
| 105 | 𬭊 (Db) | — |
| 106 | 𬭳 (Sg) | — |
| 107 | 𬭛 (Bh) | — |
| 108 | 𬭶 (Hs) | — |
| 109 | 鿏 (Mt) | — |
| 110 | 𫟼 (Ds) | — |
| 111 | 𬬭 (Rg) | — |
| 112 | 鿔 (Cn) | — |
| 113 | 鿭 (Nh) | — |
| 114 | 𫓧 (Fl) | — |
| 115 | 镆 (Mc) | — |
| 116 | 𫟷 (Lv) | — |
| 117 | 鿬 (Ts) | — |
| 118 | 鿫 (Og) | — |