Table of ionisation potentials in eV and Ångströms

Values are in eV. Show in Ångströms

ZElementIIIIIIIVVVIVIIVIIIIXX
1H13.60
2He24.5954.42
3Li5.3975.64122.45
4Be9.3218.21153.89217.72
5B8.3025.1537.93259.38340.23
6C11.2624.3847.8964.49392.09489.99
7N14.5329.6047.4577.4797.89552.07667.05
8O13.6235.1254.9477.41113.90138.12739.33871.41
9F17.4234.9762.7187.14114.24157.16185.19953.911103.12
10Ne21.5640.9663.4697.12126.22157.93207.28239.101195.821362.20
11Na5.1447.2971.6298.91138.40172.18208.50264.25299.861465.12
12Mg7.6515.0480.14109.27141.27186.76225.02265.96327.90367.50
13Al5.9918.8328.45119.99153.83190.48241.76284.66330.13398.75
14Si8.1516.3533.4945.14166.77205.27246.48303.54351.12401.37
15P10.4919.7730.2051.4465.03220.42263.57309.60372.13424.42
16S10.3623.3434.7947.2272.5988.05280.95328.74379.55447.46
17Cl12.9723.8139.6153.4767.8297.03114.20348.28400.80455.63
18Ar15.7627.6340.7459.8175.0291.01124.32143.46422.45478.69
19K4.3431.6345.8160.9182.6699.44117.56154.88175.82503.75
20Ca6.1111.8750.9167.2784.51108.78127.21147.24188.54211.27
21Sc6.5612.8024.7673.4991.69110.68137.99158.08180.03225.18
22Ti6.8213.5827.4943.2799.30119.53140.85170.35192.05215.92
23V6.7414.6529.3146.7165.28128.13150.64173.45205.81230.49
24Cr6.7716.4930.9649.1669.4690.63160.18184.74209.29244.37
25Mn7.4315.6433.6751.2172.4195.60119.20194.53221.81248.34
26Fe7.9016.1930.6554.8075.0199.06124.98151.06233.59262.10
27Co7.8617.0833.5051.2779.47102.04128.94157.83186.14275.37
28Ni7.6418.1735.1954.9276.06107.87132.66162.42193.42224.66
29Cu7.7320.2936.8457.3879.85103.03138.86166.01198.99231.97
30Zn9.3917.9639.7259.5781.83107.99134.03173.95202.96238.05

Data from CHIANTI.