Ionic Radii

Book chapter

Rollinson, Hugh and Adetunji, Jacob 2017. Ionic Radii. in: White, W. M. (ed.) Encyclopedia of Geochemistry: A Comprehensive Reference Source on the Chemistry of the Earth New York Springer International Publishing. pp. 1-6
AuthorsRollinson, Hugh and Adetunji, Jacob
EditorsWhite, W. M.
Abstract

Definition and Assumptions An ion is an atom with an electrical charge, achieved either by gaining or losing one or more electrons. The ionic radius of the ion (rion) of an atom (either a cation or anion) is a measure of the size of a spherical ion. The ionic radius is similar to but different from the atomic radius for the ionic size is dependent on the distribution of its outermost electrons and is inversely proportional to the effective nuclear charge experienced by ions. It is calculated from the internuclear distance between a cation and a neighboring anion in a lattice. Ionic radii are typically reported in picometers (pm, 1 × 10−12 m) or in the older literature as Angstroms (Å), where 1 Å = 100 pm. A typical range of ionic radii is 25–170 pm for four to eightfold coordination (see Table 1).

KeywordsGeochemistry; Environmental chemistry; Earth system sciences; Fossil fuels
Page range1-6
Year2017
Book titleEncyclopedia of Geochemistry: A Comprehensive Reference Source on the Chemistry of the Earth
PublisherSpringer International Publishing
Place of publicationNew York
SeriesEncyclopedia of Earth Sciences Series
ISBN9783319391939
ISSN1388-4360
Digital Object Identifier (DOI)https://doi.org/10.1007/978-3-319-39193-9_340-1
Web address (URL)https://link.springer.com/referenceworkentry/10.1007/978-3-319-39193-9_340-1
hdl:10545/621965
File
File Access Level
Restricted
Output statusPublished
Publication dates27 Sep 2017
Publication process dates
Deposited24 Nov 2017, 12:45
ContributorsUniversity of Derby
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