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ionization

The generation of one or more ions. It may occur, e.g. by loss of an electron from a neutral molecular entity, by the unimolecular heterolysis of such an entity into two or more ions, or by a heterolytic substitution reaction involving neutral molecules, such as:
I03183-1
I03183-2
I03183-3
The loss of an electron from a singly, doubly, etc. charged cation is called second, third, etc. ionization. This terminology is used especially in mass spectroscopy.
Source:
PAC, 1994, 66, 1077 (Glossary of terms used in physical organic chemistry (IUPAC Recommendations 1994)) on page 1127
InChI=1/ClH/h1H/p-1/fCl/h1h/q-1
VEXZGXHMUGYJMC-QOKNLKRHCF
InChI=1/Al.3ClH/h;3*1H/q+3;;;/p-3/fAl.3Cl/h;3*1h/qm;3*-1
VSCWAEJMTAWNJL-GZMOREBICG
InChI=1/C2H4O2/c1-2(3)4/h1H3,(H,3,4)/f/h3H
QTBSBXVTEAMEQO-TULZNQERCK
InChI=1/H2O/h1H2
XLYOFNOQVPJJNP-UHFFFAOYAF
InChI=1/H2O/h1H2/p+1/fH3O/h1H/q+1
XLYOFNOQVPJJNP-QJFNTNGTCV
InChI=1/C2H4O2/c1-2(3)4/h1H3,(H,3,4)/p-1/fC2H3O2/q-1
QTBSBXVTEAMEQO-KSORUIRRCC
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Cite as:
IUPAC. Compendium of Chemical Terminology, 2nd ed. (the "Gold Book"). Compiled by A. D. McNaught and A. Wilkinson. Blackwell Scientific Publications, Oxford (1997). XML on-line corrected version: http://goldbook.iupac.org (2006-) created by M. Nic, J. Jirat, B. Kosata; updates compiled by A. Jenkins. ISBN 0-9678550-9-8. doi:10.1351/goldbook.
Last update: 2014-02-24; version: 2.3.3.
DOI of this term: doi:10.1351/goldbook.I03183.
Original PDF version: http://www.iupac.org/goldbook/I03183.pdf. The PDF version is out of date and is provided for reference purposes only. For some entries, the PDF version may be unavailable.
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