base de Lewis
1. In chemistry, a substance that can donate a pair of electrons to form a coordinate covalent bond with an acid (Lewis acid), according to Lewis acid-base theory
Ammonia is a Lewis base because it has a lone pair of electrons that can be donated to a Lewis acid.
A amônia é uma base de Lewis porque possui um par de elétrons não compartilhados que pode ser doado a um ácido de Lewis.
2. Any molecule or ion with an available electron pair that can accept a positive charge or form a coordinate bond
Water acts as a Lewis base when it donates its electron pair to a metal ion.
A água atua como uma base de Lewis quando doa seu par de elétrons a um íon metálico.
This is a technical term primarily used in academic and professional chemistry contexts in both Brazil and the USA. Named after American chemist Gilbert N. Lewis, this concept is fundamental to modern chemistry education and is universally recognized in scientific communities worldwide.
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