Solution Found!
Predict the approximate bond angles for the following:a.
Chapter 1, Problem 57P(choose chapter or problem)
Predict the approximate bond angles for the following:
a. the \(H-C-H\) bond angle in \(H_{2} C=O\) c. the \(C-C-N\) bond angle in \(\mathrm{CH}_{3} \mathrm{C} \equiv \mathrm{N}\)
b. the \(F-B-F\) bond angle in \({ }^{-} B F_{4}\) d. the \(C-C-N\) bond angle in \(\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{NH}_{2}\)
Equation Transcription:
☰
Text Transcription:
H-C-H
H_2 C = O
F-B-F
^- BF_4
C-C-N
CH_3 C trigram N
CH_3 CH_2 NH_2
Questions & Answers
QUESTION:
Predict the approximate bond angles for the following:
a. the \(H-C-H\) bond angle in \(H_{2} C=O\) c. the \(C-C-N\) bond angle in \(\mathrm{CH}_{3} \mathrm{C} \equiv \mathrm{N}\)
b. the \(F-B-F\) bond angle in \({ }^{-} B F_{4}\) d. the \(C-C-N\) bond angle in \(\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{NH}_{2}\)
Equation Transcription:
☰
Text Transcription:
H-C-H
H_2 C = O
F-B-F
^- BF_4
C-C-N
CH_3 C trigram N
CH_3 CH_2 NH_2
ANSWER:Step 1 of 4
Here we have to find the bond angles of the following given compounds.
Steric number: The bond angle of a molecule can be calculated by using steric number concept of VSEPR theory. The steric number is defined as the sum of a number of atoms bonded to the central atom of a molecule and number of lone pair present on the central atom.
Steric number (SN) = number of bond pair + number of lone pair
According to the VSEPR theory, the relation between bond angle and steric number is shown below,
SN |
Shape |
Bond angle(Degree) |
2 |
Linear |
180 |
3 |
Trigonal planar |
120 |
4 |
Tetrahedral |
109.5 |
5 |
Trigonal bipyramidal |
90,120 |
6 |
Octahedral |
90 |
a. The H-C-H bond angle in 
In order to find out the steric number we have to draw the Lewis structure of the molecule,
SN in 
= 3 + 0 = 3
Thus the steric number 3 indicates that the H-C-H bond angle is 120°.
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