How many pairs of bonding and nonbonding valence electrons are in this molecule?
(a) 3 pairs of bonding electrons, 3 pairs of nonbonding electrons
(b) 4 pairs of bonding valence electrons, 2 pairs of nonbonding valence electrons
(c) 4 pairs of bonding valence electrons, 4 pairs of nonbonding valence electrons
(d) 2 pairs of bonding valence electrons, 4 pairs of nonbonding valence electrons
Valence electrons are the electrons in the outermost shell of a given atom. These are the electrons that are capable of engaging in any bonding interaction with other atoms through covalent or ionic interactions.
Answer and Explanation: 1
Given that no molecule is shown, I will outline what it means to have nonbonding and bonding electrons. Bonding electrons are those electrons in a Lewis structure which directly form covalent linkages between two atoms, such as a C-C linkage. Nonbonding electrons, found in elements such as nitrogen in the -NH2 form, are lone pair electrons that are not currently engaged with other atoms in a bonding interaction, but are capable of doing so.
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fromChapter 1 / Lesson 4
Discover a special group of electrons called valence electrons. Explore how electrons are arranged around the nucleus of an atom, where the valance electrons are located, and how to predict the number of valence electrons for an element.