One of the mysteries of the English language finally explained.
A compound or ionic species which can donate an electron pair to an acceptor compound.
- ‘In both cases, the ammonia molecule is acting as a Lewis base, donating the pair of electrons required to form the coordinate covalent bond.’
- ‘In simple additions, the carbonyl compounds can behave as both Lewis acids and Lewis bases depending on what reagents are present.’
1960s: named after G. N. Lewis (see Lewis acid).
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