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isoelectronic

American

[ahy-soh-i-lek-tron-ik, -ee-lek-] / ˌaɪ soʊ ɪ lɛkˈtrɒn ɪk, -ˌi lɛk- /

adjective

Physics, Chemistry.

noting or pertaining to atoms and ions having an equal number of electrons.
noting or pertaining to atoms, radicals, or ions having either an equal number of electrons or an equal number of valence electrons.

isoelectronic British

/ ˌaɪsəʊɪlɛkˈtrɒnɪk /

adjective

(of atoms, radicals, or ions) having an equal number of electrons or a similar configuration of electrons

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of isoelectronic

First recorded in 1925–30; iso- + electronic

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

The greater the nuclear charge, the smaller the radius in a series of isoelectronic ions and atoms.

From Textbooks • Feb. 14, 2019

The Ca2+ ion is therefore isoelectronic with the noble gas Ar.

From Textbooks • Feb. 14, 2019

For atoms or ions that are isoelectronic, the number of protons determines the size.

From Textbooks • Feb. 14, 2019

Atoms and ions that have the same electron configuration are said to be isoelectronic.

From Textbooks • Feb. 14, 2019

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023