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Solved: Molecular Shapes; the VSEPR Model (Sections)In
Chapter 5, Problem 20E(choose chapter or problem)
Problem 20E
Molecular Shapes; the VSEPR Model (Sections)
In which of the following molecules can you confidently predict the bond angles about the central atom, and for which would you be a bit uncertain? Explain in each case. (a) H2S, (b) BCl3, (c) CH3I, (d) CBr4, (e) TeBr4
Questions & Answers
QUESTION:
Problem 20E
Molecular Shapes; the VSEPR Model (Sections)
In which of the following molecules can you confidently predict the bond angles about the central atom, and for which would you be a bit uncertain? Explain in each case. (a) H2S, (b) BCl3, (c) CH3I, (d) CBr4, (e) TeBr4
ANSWER:
Step 1 of 5
(a)
The total number of valance electrons in is 8. According to VSEPR theory, these four pairs of electrons occupy the corners of a tetrahedron to form a tetrahedral geometry. Since there are two lone pairs of electrons on S, the bond angle will deviate from the ideal tetrahedral bond angle. The Lewis structure of is: