lone (electron) pair

https://doi.org/10.1351/goldbook.L03618
Two paired electrons localized in the @V06588@ shell on a single atom. Lone pairs should be designated with two dots. The term 'nonbonding electron pair' is more appropriate, and is found in many modern text books.
Source:
PAC, 1994, 66, 1077. (Glossary of terms used in physical organic chemistry (IUPAC Recommendations 1994)) on page 1137 [Terms] [Paper]
Citation: 'lone (electron) pair' in IUPAC Compendium of Chemical Terminology, 3rd ed. International Union of Pure and Applied Chemistry; 2006. Online version 3.0.1, 2019. https://doi.org/10.1351/goldbook.L03618 RIS BibTex EndNote
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Last revised: February 24, 2014