valence electron

noun

Definition of valence electron 

: a single electron or one of two or more electrons in the outer shell of an atom that is responsible for the chemical properties of the atom

First Known Use of valence electron

1922, in the meaning defined above

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The first known use of valence electron was in 1922

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valence electron

noun

Medical Definition of valence electron 

: a single electron or one of two or more electrons in the outer shell of an atom that is responsible for the chemical properties of the atom

More from Merriam-Webster on valence electron

Britannica.com: Encyclopedia article about valence electron

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