electron pair

American  

noun

1. Chemistry. two electrons occupying the same orbital in an atom or molecule; two electrons working together, especially forming a nonpolar covalent bond between atoms.

2. Physics. an electron and a positron produced in a reaction, as by a high-energy photon.

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electron pair Scientific  

1. Two electrons functioning or regarded as functioning together, especially two electrons that form a covalent bond between atoms.

2. An electron and a positron produced by a high-energy photon.

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Etymology

Origin of electron pair

First recorded in 1930–35

Example Sentences

However, Cooper’s theory described only the formation of a single electron pair.

From Nature • Oct. 7, 2019

What will the electron pair geometry and molecular structure be?

From Textbooks • Feb. 14, 2019

The ideal bond angles in a trigonal pyramid are based on the tetrahedral electron pair geometry.

From Textbooks • Feb. 14, 2019

The mutual attraction between this negatively charged electron pair and the two atoms’ positively charged nuclei serves to physically link the two atoms through a force we define as a covalent bond.

From Textbooks • Feb. 14, 2019

The species donating the electron pair that compose the bond is a Lewis base, the species accepting the electron pair is a Lewis acid, and the product of the reaction is a Lewis acid-base adduct.

From Textbooks • Feb. 14, 2019