Ionization energy: 3rd
The 3rd ionization energy of the element M is a measure of the energy required to remove one electron from one mole of the gaseous ion M2+

Units
kJ mol-1
Notes
None
For access to other ionisation enrgies, select from:
- Ionisation energy definition
- 1st ionisation energies
- 2nd ionisation energies
- 3rd ionisation energies
- 4th ionisation energies
- 5th ionisation energies
- 6th ionisation energies
- 7th ionisation energies
- 8th ionisation energies
- 9th ionisation energies
- 10th ionisation energies
- 11th ionisation energies
- 12th ionisation energies
- 13th ionisation energies
- 14th ionisation energies
- 15th ionisation energies
- 16th ionisation energies
- 17th ionisation energies
- 18th ionisation energies
- 19th ionisation energies
- 20th ionisation energies
- 21st ionisation energies
Literature sources
- J.E. Huheey, E.A. Keiter, and R.L. Keiter in Inorganic Chemistry: Principles of Structure and Reactivity, 4th edition, HarperCollins, New York, USA, 1993.
- D.R. Lide, (Ed.) in Chemical Rubber Company handbook of chemistry and physics, CRC Press, Boca Raton, Florida, USA, 79th edition, 1998.
- J.A. Dean (ed) in Lange's Handbook of Chemistry, McGraw-Hill, New York, USA, 14th edition, 1992.
- A. Kramida, Yu. Ralchenko, J. Reader, and NIST ASD Team (2018). NIST Atomic Spectra Database (ver. 5.5.6), [Online]. Available: https://physics.nist.gov/asd [Accessed 10 March 2018]. National Institute of Standards and Technology, Gaithersburg, MD.
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| 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | |||||||||||
| 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | |||||||||||
| 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | 32 | 33 | 34 | 35 | 36 | |
| 37 | 38 | 39 | 40 | 41 | 42 | 43 | 44 | 45 | 46 | 47 | 48 | 49 | 50 | 51 | 52 | 53 | 54 | |
| 55 | 56 | * | 71 | 72 | 73 | 74 | 75 | 76 | 77 | 78 | 79 | 80 | 81 | 82 | 83 | 84 | 85 | 86 | 
| 87 | 88 | ** | 103 | 104 | 105 | 106 | 107 | 108 | 109 | 110 | 111 | 112 | 113 | 114 | 115 | 116 | 117 | 118 | 
| *Lanthanoids | * | 57 | 58 | 59 | 60 | 61 | 62 | 63 | 64 | 65 | 66 | 67 | 68 | 69 | 70 | |||
| **Actinoids | ** | 89 | 90 | 91 | 92 | 93 | 94 | 95 | 96 | 97 | 98 | 99 | 100 | 101 | 102 | |||
