lone pair

British

noun

chem a pair of valency electrons of opposite spin that are not shared between the atoms in a molecule and are responsible for the formation of coordinate bonds

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lone pair

In trigonal bipyramidal arrangements, repulsion is minimized when every lone pair is in an equatorial position.

From Textbooks ● Feb. 14, 2019

Like ammonia, amines are weak bases due to the lone pair of electrons on their nitrogen atoms:

From Textbooks ● Feb. 14, 2019

Click on each bond type or lone pair at right to add that group to the central atom.

From Textbooks ● Feb. 14, 2019

Group 15 elements such as nitrogen have five valence electrons in the atomic Lewis symbol: one lone pair and three unpaired electrons.

From Textbooks ● Feb. 14, 2019

An sp3 hybrid orbital can also hold a lone pair of electrons.

From Textbooks ● Feb. 14, 2019

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