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
Permalink -

https://repository.derby.ac.uk/item/9418q/ionic-radii

Log in to edit
  • 116
    total views
  • 0
    total downloads
  • 0
    views this month
  • 0
    downloads this month

Export as

Related outputs

The eastern French Pyrenees: from mountain belt to foreland basin
Satterfield, Dorothy, Rollinson, Hugh and Suthren, Roger 2019. The eastern French Pyrenees: from mountain belt to foreland basin. Geology Today. 35 (6), pp. 228-240. https://doi.org/10.1111/gto.12291
Trevorite: Ni-rich spinel formed by metasomatism and desulfurization processes at Bon Accord, South Africa?
O'Driscoll, Brian, Clay, Patricia L., Cawthorn, R. Grant, Lenaz, Davide, Adetunji, Jacob and Kronz, Andreas 2014. Trevorite: Ni-rich spinel formed by metasomatism and desulfurization processes at Bon Accord, South Africa? Mineralogical Magazine. https://doi.org/10.1180/minmag.2014.078.1.11
UK pension changes in 2015: some mathematical considerations
Stubbs, John and Adetunji, Jacob 2016. UK pension changes in 2015: some mathematical considerations. The Mathematical Gazette. https://doi.org/10.1017/mag.2016.55
Explainer: what dust from the Sahara does to you and the planet
Adetunji, Jacob 2016. Explainer: what dust from the Sahara does to you and the planet. The Conversation.
Low temperature, authigenic illite and carbonates in a mixed dolomite-clastic lagoonal and pedogenic setting, Spanish Central System, Spain
Huggett, Jennifer, Cuadros, Javier, Gale, Andrew S., Wray, David and Adetunji, Jacob 2016. Low temperature, authigenic illite and carbonates in a mixed dolomite-clastic lagoonal and pedogenic setting, Spanish Central System, Spain. Applied Clay Science. https://doi.org/10.1016/j.clay.2016.06.016
57Fe Mössbauer spectroscopy investigations of iron oxidation states in the Harmattan dust nutrient contribution to West African soils
Adetunji, Jacob 2014. 57Fe Mössbauer spectroscopy investigations of iron oxidation states in the Harmattan dust nutrient contribution to West African soils. Atmospheric Environment. https://doi.org/10.1016/j.atmosenv.2014.09.025
Mineralogical and geochemical characterisation of warm-water, shallow-marine glaucony from the Tertiary of the London Basin
Huggett, Jennifer, Adetunji, Jacob, Longstaffe, Fred and Wray, David 2017. Mineralogical and geochemical characterisation of warm-water, shallow-marine glaucony from the Tertiary of the London Basin. Clay Minerals. https://doi.org/10.1180/claymin.2017.052.1.02
Archaean chromitites show constant Fe 3+ /ΣFe in Earth's asthenospheric mantle since 3.8 Ga
Rollinson, Hugh, Adetunji, Jacob, Lenaz, Davide and Szilas, Kristoffer 2017. Archaean chromitites show constant Fe 3+ /ΣFe in Earth's asthenospheric mantle since 3.8 Ga. Lithos. 282-283, pp. 316-325. https://doi.org/10.1016/j.lithos.2017.03.020
There were no large volumes of felsic continental crust in the early Earth
Rollinson, Hugh 2017. There were no large volumes of felsic continental crust in the early Earth. Geosphere. 13 (2), p. 235–246. https://doi.org/10.1130/GES01437.1
Evidence for melting mud in Earth’s mantle from extreme oxygen isotope signatures in zircon
Spencer, Christopher J., Cavosie, Aaron J., Raub, Timothy D., Rollinson, Hugh, Jeon, Heejin, Searle, Michael P., Miller, Jodie A., McDonald, Bradley J. and Evans, Noreen J. 2017. Evidence for melting mud in Earth’s mantle from extreme oxygen isotope signatures in zircon. Geology. 45 (11), pp. 1-17. https://doi.org/10.1130/G39402.1
Highly refractory Archaean peridotite cumulates: Petrology and geochemistry of the Seqi Ultramafic Complex, SW Greenland
Szilas, Kristoffer, van Hinsberg, Vincent J., McDonald, Iain, Næraa, Tomas, Rollinson, Hugh, Adetunji, Jacob and Bird, Dennis 2017. Highly refractory Archaean peridotite cumulates: Petrology and geochemistry of the Seqi Ultramafic Complex, SW Greenland. Geoscience Frontiers. 9 (3), pp. 1-26. https://doi.org/10.1016/j.gsf.2017.05.003
Masirah – The other Oman ophiolite: A better analogue for mid-ocean ridge processes?
Rollinson, Hugh 2017. Masirah – The other Oman ophiolite: A better analogue for mid-ocean ridge processes? Geoscience Frontiers. 8 (6), pp. 1-10. https://doi.org/10.1016/j.gsf.2017.04.009
Archaean crustal evolution in West Africa: A new synthesis of the Archaean geology in Sierra Leone, Liberia, Guinea and Ivory Coast
Rollinson, Hugh 2016. Archaean crustal evolution in West Africa: A new synthesis of the Archaean geology in Sierra Leone, Liberia, Guinea and Ivory Coast. Precambrian Research. 281, pp. 1-12. https://doi.org/10.1016/j.precamres.2016.05.005
Surprises from the top of the mantle transition zone
Rollinson, Hugh 2016. Surprises from the top of the mantle transition zone. Geology Today. 32 (2), pp. 58-64. https://doi.org/10.1111/gto.12130
Comment on ‘Podiform chromitites do form beneath mid-ocean ridges’ by Arai, S. and Miura, M.
Rollinson, Hugh and Adetunji, Jacob 2016. Comment on ‘Podiform chromitites do form beneath mid-ocean ridges’ by Arai, S. and Miura, M. Lithos. 254-255, pp. 131-133. https://doi.org/10.1016/j.lithos.2015.10.023
Chromite in the mantle section of the Oman Ophiolite: Implications for the tectonic evolution of the Oman Ophiolite
Rollinson, Hugh and Adetunji, Jacob 2015. Chromite in the mantle section of the Oman Ophiolite: Implications for the tectonic evolution of the Oman Ophiolite. Acta Geologica Sineca. 89 (Supp.2), pp. 73-76. https://doi.org/10.1111/1755-6724.12308_44
The geochemistry and oxidation state of podiform chromitites from the mantle section of the Oman ophiolite: A review
Rollinson, Hugh and Adetunji, Jacob 2015. The geochemistry and oxidation state of podiform chromitites from the mantle section of the Oman ophiolite: A review. Gondwana Research. 27 (2), pp. 1-12. https://doi.org/10.1016/j.gr.2013.07.013
Determination of Fe3+/ΣFe ratios in chrome spinels using a combined Mössbauer and single-crystal X-ray approach: application to chromitites from the mantle section of the Oman ophiolite
Lenaz, Davide, Adetunji, Jacob and Rollinson, Hugh 2014. Determination of Fe3+/ΣFe ratios in chrome spinels using a combined Mössbauer and single-crystal X-ray approach: application to chromitites from the mantle section of the Oman ophiolite. Contributions to Mineralogy and Petrology. 167 (958), pp. 1-17. https://doi.org/10.1007/s00410-013-0958-2