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Chapter 10: Problem 7

Give several examples for which the following statement proves to be incorrect. "All atoms in a Lewis structure have an octet of electrons in their valence shells."

Short Answer

Expert verified
Examples where the statement 'All atoms in a Lewis structure have an octet of electrons in their valence shells' is incorrect include Boron Trifluoride (BF3), Sulfur Hexafluoride (SF6), and Nitric Oxide (NO).

Step by step solution

01

Example of an incomplete octet

Consider the molecule of Boron Trifluoride, \( BF_3 \). In this molecule, Boron has only six electrons in its valence shell, not eight.
02

Example of an expanded octet

Consider the Sulfur Hexafluoride molecule, \( SF_6 \). In this molecule, Sulfur has twelve electrons in its valence shell, more than the usual eight.
03

Example of odd-electron molecule

Consider the Nitric Oxide molecule, \( NO \). Nitrogen in Nitric Oxide has seven electrons in its valence shell - an odd number. This factor also leads the molecule to behave as a paramagnetic species.

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Most popular questions from this chapter

One of the allotropes of sulfur is a ring of eight sulfur atoms. Draw the Lewis structure for the \(S_{8}\) ring. Is the ring likely to be planar? The \(S_{8}\) ring can be oxidized to produce \(S_{8}\) O. In \(S_{8} O,\) the oxygen atom is bonded to one of the S atoms and the Sg ring is still intact. Draw the Lewis structure for \(\mathrm{S}_{8} \mathrm{O}\).

A few years ago the synthesis of a salt containing the \(\mathrm{N}_{5}^{+}\) ion was reported. What is the likely shape of this ion-linear, bent, zigzag, tetrahedral, seesaw, or square-planar? Explain your choice.

What is the VSEPR theory? On what physical basis is the VSEPR theory founded?

Through appropriate Lewis structures, show that the phenomenon of resonance is involved in the nitrite ion.

Use the VSEPR theory to predict a probable shape of the molecule \(\mathrm{F}_{4} \mathrm{SCH}_{2}\), and explain the source of any ambiguities in your prediction.
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