Ionic radii

Book chapter


Rollinson, Hugh and Adetunji, Jacob 2017. Ionic radii. in: Springer International Publishing.
AuthorsRollinson, Hugh and Adetunji, Jacob
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).

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
Year2017
PublisherSpringer International Publishing
Series13884360
ISBN9783319391939
Digital Object Identifier (DOI)https://doi.org/10.1007/978-3-319-39193-9_340-1
Web address (URL)http://hdl.handle.net/10545/621965
hdl:10545/621965
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Publication dates27 Sep 2017
Publication process dates
Deposited24 Nov 2017, 12:45
ContributorsUniversity of Derby
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