Concept explainers
For each of the following molecules, state the bond angle (or bond angles, as appropriate) that you would expect to see on the central atom based on the VSEPR model. Would you expect the actual bond angles to be greater or less than this?
- a OF2
- b NCl3
- c CF2CF2
- d GeF4
(a)
Interpretation:
With the help of VSEPR theory, the expected bond angle(s) of given molecules on the central atom has to be stated.
Concept Introduction:
Valence bond theory: The VSEPR theory tells about the shapes of molecules and ions by taking the consideration that the outermost electron pairs are arranged about each atom so that the pairs of electrons are kept at a distance from one molecule to other, thereby minimizing the repulsion of electron-pair.
Steps to predict the geometry by VSEPR model:
- 1) The electron dot formula is written from the molecular formula.
- 2) The number of electron pairs including the bonding and non-bonding pairs around the central atom is determined from the electron dot formula.
- 3) The arrangement of these electron pairs about the central atom is determined.
- 4) The molecular geometry is determined from the directions of the bonding pairs or the arrangement.
To predict the bond angle of
Answer to Problem 10.38QP
The bond angle of
Explanation of Solution
The geometry of
(b)
Interpretation:
With the help of VSEPR theory, the expected bond angle(s) of given molecules on the central atom has to be stated.
Concept Introduction:
Valence bond theory: The VSEPR theory tells about the shapes of molecules and ions by taking the consideration that the outermost electron pairs are arranged about each atom so that the pairs of electrons are kept at a distance from one molecule to other, thereby minimizing the repulsion of electron-pair.
Steps to predict the geometry by VSEPR model:
- 1) The electron dot formula is written from the molecular formula.
- 2) The number of electron pairs including the bonding and non-bonding pairs around the central atom is determined from the electron dot formula.
- 3) The arrangement of these electron pairs about the central atom is determined.
- 4) The molecular geometry is determined from the directions of the bonding pairs or the arrangement.
To predict the bond angle of
Answer to Problem 10.38QP
The bond angle of
Explanation of Solution
The geometry of
(c)
Interpretation:
With the help of VSEPR theory, the expected bond angle(s) of given molecules on the central atom has to be stated.
Concept Introduction:
Valence bond theory: The VSEPR theory tells about the shapes of molecules and ions by taking the consideration that the outermost electron pairs are arranged about each atom so that the pairs of electrons are kept at a distance from one molecule to other, thereby minimizing the repulsion of electron-pair.
Steps to predict the geometry by VSEPR model:
- 1) The electron dot formula is written from the molecular formula.
- 2) The number of electron pairs including the bonding and non-bonding pairs around the central atom is determined from the electron dot formula.
- 3) The arrangement of these electron pairs about the central atom is determined.
- 4) The molecular geometry is determined from the directions of the bonding pairs or the arrangement.
To predict the bond angle of
Answer to Problem 10.38QP
The bond angle of
Explanation of Solution
The geometry of
(d)
Interpretation:
With the help of VSEPR theory, the expected bond angle(s) of given molecules on the central atom has to be stated.
Concept Introduction:
Valence bond theory: The VSEPR theory tells about the shapes of molecules and ions by taking the consideration that the outermost electron pairs are arranged about each atom so that the pairs of electrons are kept at a distance from one molecule to other, thereby minimizing the repulsion of electron-pair.
Steps to predict the geometry by VSEPR model:
- 1) The electron dot formula is written from the molecular formula.
- 2) The number of electron pairs including the bonding and non-bonding pairs around the central atom is determined from the electron dot formula.
- 3) The arrangement of these electron pairs about the central atom is determined.
- 4) The molecular geometry is determined from the directions of the bonding pairs or the arrangement.
To predict the bond angle of
Answer to Problem 10.38QP
The bond angle of
Explanation of Solution
The geometry of
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Chapter 10 Solutions
Lab Manual Experiments in General Chemistry
- Use the VSEPR model to predict the bond angles around each central atom in the following Lewis structures (benzene rings are frequently pictured as hexagons, without the letter for the carbon atom at each vertex). Note that the drawings do not necessarily depict the bond angles correctly.arrow_forwardWhich of these molecules has a net dipole moment? For each of the polar molecules, indicate the direction of the dipole in the molecule. (a) nitrosyl fluoride, FNO (b) disulfur difluoride, S2F2arrow_forwardPredict the geometry of the following species: (a) SO2 (b) BeF2 (c) SeCl4 (d) Pcl5arrow_forward
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