Definition of lone pair in English:

lone pair

Line breaks: lone pair

Entry from British & World English dictionary

noun

Chemistry
A pair of electrons occupying an orbital in an atom or molecule and not directly involved in bonding.

Definition of lone pair in:

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Word of the day flagitious
Pronunciation: fləˈdʒɪʃəs
adjective
(of a person or their actions) criminal; villainous