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单词 lone pair
释义

Definition of lone pair in English:

lone pair

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

    Example sentencesExamples
    • The oxygen atom of an ether functional group has two lone pairs of electrons.
    • Identifying types of bonds and lone pairs of electrons is as critical to accurately predicting the shape of a molecule as is determining the number of bonds.
    • Molecules that contain lone pairs of electrons (like ammonia or water) can use these to bond with metal atoms capable of receiving them.
    • A very useful method for understanding and predicting molecular shapes that relies upon the role of the lone pair is called the Valence Shell Electron Pair Repulsion theory.
    • The molecular geometry around an atom depends upon the number of bonds to other atoms and the presence or absence of lone pairs of electrons associated with the atom.
 
 
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更新时间:2024/12/23 18:46:15