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Ch.9 - Molecular Geometry and Bonding Theories
Brown - Chemistry: The Central Science 14th Edition
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Tutti i libri di testoBrown 14th EditionCh.9 - Molecular Geometry and Bonding TheoriesProblema 100b
Capitolo 9, Problema 100b

Sodium azide is a shock-sensitive compound that releases N2 upon physical impact. The compound is used in automobile airbags. The azide ion is N3-. (b) State the hybridization of the central N atom in the azide ion.

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insert step 1> Identify the central atom in the azide ion (N3-).
insert step 2> Recognize that the azide ion is a linear molecule with the structure N-N-N.
insert step 3> Determine the number of regions of electron density around the central nitrogen atom.
insert step 4> Use the VSEPR theory to predict the hybridization based on the number of electron density regions.
insert step 5> Conclude the hybridization of the central nitrogen atom based on the linear geometry.

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Hybridization

Hybridization is a concept in chemistry that describes the mixing of atomic orbitals to form new hybrid orbitals. These hybrid orbitals can then be used to form covalent bonds in molecules. The type of hybridization depends on the number of electron pairs around the central atom, influencing the geometry and bonding properties of the molecule.
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Hybridization

Azide Ion Structure

The azide ion (N3-) consists of three nitrogen atoms connected in a linear arrangement. The central nitrogen atom is bonded to two terminal nitrogen atoms, which can be represented as N=N^+=N^-. Understanding the structure of the azide ion is crucial for determining the hybridization of the central nitrogen atom, as it influences the distribution of electron density and bond angles.
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Lewis Dot Structures: Ions

Valence Bond Theory

Valence Bond Theory explains how atomic orbitals combine to form bonds in molecules. It emphasizes the role of electron pairs and the spatial orientation of orbitals. In the case of the azide ion, this theory helps in determining the hybridization state of the central nitrogen atom, which is essential for predicting the molecule's reactivity and stability.
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Valence Shell Electron Pair Repulsion Theory
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Domanda del libro di testo

Sodium azide is a shock-sensitive compound that releases N2 upon physical impact. The compound is used in automobile airbags. The azide ion is N3-. (a) Draw the Lewis structure of the azide ion that minimizes formal charge (it does not form a triangle). Is it linear or bent?

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Domanda del libro di testo

(b) The anion IO4- has a tetrahedral structure: three oxygen atoms form double bonds with the central iodine atom and one oxygen atom which carries a negative charge forms a single bond. Predict the molecular geometry of IO65-.

Domanda del libro di testo

Butadiene, C4H6, is a planar molecule that has the following carbon–carbon bond lengths:

(a) Predict the bond angles around each of the carbon atoms and sketch the molecule.

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Domanda del libro di testo

In ozone, O3, the two oxygen atoms on the ends of the molecule are equivalent to one another. (d) How many electrons are delocalized in the p system of ozone?

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Domanda del libro di testo

Which of the following statements about hybrid orbitals is or are true? (i) After an atom undergoes sp hybridization, there is one unhybridized p orbital on the atom, (ii) Under sp2 hybridization, the large lobes point to the vertices of an equilateral triangle, and (iii) The angle between the large lobes of sp3 hybrids is 109.5°.

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