
Refers to a group of atoms or ions having the same number of electrons. For example, F
-, Ne, and Na
+ are isoelectronic.
Found on
http://antoine.frostburg.edu/chem/senese/101/glossary/i.shtml

Two or more molecular entities are described as isoelectronic if they have the same number of valence electrons and the same structure, i.e. number and connectivity of atoms, but differ in some of the elements involved. Thus CO, N2 and NO+ are isoelectronic CH2=C=O and CH2=N=N are isoelectronic CH3
Found on
http://www.chem.qmul.ac.uk/iupac/gtpoc/I.html

Refers to several dissimilar atoms or ions with identical electronic configurations.
Found on
http://www.chemistry-dictionary.com/definition/isoelectronic.php

Refers to a group of atoms or ions having the same number of electrons. For example, F
-, Ne, and Na
+ are isoelectronic.
Found on
http://www.daviddarling.info/encyclopedia/I/isoelectronic.html

refers to several dissimilar atoms or ions with identical electronic configurations.
Found on
https://www.encyclo.co.uk/local/22434

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.
Found on
https://www.infoplease.com/dictionary/isoelectronic
No exact match found.