Lewis, Gilbert Newton

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Lewis, Gilbert Newton

U.S. physical chemist, 1875–1946. He discovered the covalent bond and was the first to produce pure heavy water (deuterium oxide).

Lewis acid

A substance that accepts an electron pair from a base, forming a covalent bond with the base.

Lewis base

A substance that donates an electron pair to an acid, forming a covalent bond with the acid.
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