(a) Interpretation: The shape of a molecule whose central atom is surrounded by two regions of electron density should be determined. Concept Introduction: The shape of molecule is determined by electron density around central atom as it is suggested by VSEPR theory. According to VSEPR theory we can determine the shape of a molecule by following the given steps: First identify the number of bonded atoms to the central atom and count the number of lone pair of electrons on central atom. Add these. The sum obtained above gives us idea about the electronic geometry in a molecule. For example, if it is two then the electron geometry will be linear, if it is three the geometry will be trigonal planar, four the geometry will be tetrahedral, five the geometry will be trigonal bipyramidal, six the geometry will be octahedral. Now for molecular geometry we have to consider the number of lone pair of electrons. The molecular geometry depends upon the repulsion order between electron pairs which is Bond-bond < lone pair −bond pair < lone pair-lone pair.
(a) Interpretation: The shape of a molecule whose central atom is surrounded by two regions of electron density should be determined. Concept Introduction: The shape of molecule is determined by electron density around central atom as it is suggested by VSEPR theory. According to VSEPR theory we can determine the shape of a molecule by following the given steps: First identify the number of bonded atoms to the central atom and count the number of lone pair of electrons on central atom. Add these. The sum obtained above gives us idea about the electronic geometry in a molecule. For example, if it is two then the electron geometry will be linear, if it is three the geometry will be trigonal planar, four the geometry will be tetrahedral, five the geometry will be trigonal bipyramidal, six the geometry will be octahedral. Now for molecular geometry we have to consider the number of lone pair of electrons. The molecular geometry depends upon the repulsion order between electron pairs which is Bond-bond < lone pair −bond pair < lone pair-lone pair.
Solution Summary: The author explains that the shape of a molecule is determined by electron density around central atom as suggested by VSEPR theory.
The shape of a molecule whose central atom is surrounded by two regions of electron density should be determined.
Concept Introduction:
The shape of molecule is determined by electron density around central atom as it is suggested by VSEPR theory.
According to VSEPR theory we can determine the shape of a molecule by following the given steps:
First identify the number of bonded atoms to the central atom and count the number of lone pair of electrons on central atom. Add these.
The sum obtained above gives us idea about the electronic geometry in a molecule. For example, if it is two then the electron geometry will be linear, if it is three the geometry will be trigonal planar, four the geometry will be tetrahedral, five the geometry will be trigonal bipyramidal, six the geometry will be octahedral.
Now for molecular geometry we have to consider the number of lone pair of electrons.
The molecular geometry depends upon the repulsion order between electron pairs which is
Bond-bond < lone pair −bond pair < lone pair-lone pair.
Interpretation Introduction
(b)
Interpretation:
The shape of a molecule whose central atom is surrounded by three regions of electron density should be determined.
Concept Introduction:
The shape of molecule is determined by electron density around central atom as it is suggested by VSEPR theory.
According to VSEPR theory we can determine the shape of a molecule by following the given steps.
First identify the number of bonded atoms to the central atom and count the number of lone pair of electrons on central atom. Add these.
The sum obtained above gives us idea about the electronic geometry in a molecule. For example if it is two then the electron geometry will be linear, if it is three the geometry will be trigonal planar, four the geometry will be tetrahedral, five the geometry will be trigonal bipyramidal, six the geometry will be octahedral.
Now for molecular geometry we have to consider the number of lone pair of electrons.
The molecular geometry depends upon the repulsion order between electron pairs which is
Bond-bond < lone pair −bond pair < lone pair-lone pair.
Interpretation Introduction
(b)
Interpretation:
The shape of a molecule whose central atom is surrounded by four regions of electron density should be determined.
Concept Introduction:
The shape of molecule is determined by electron density around central atom as it is suggested by VSEPR theory.
According to VSEPR theory we can determine the shape of a molecule by following the given steps.
First identify the number of bonded atoms to the central atom and count the number of lone pair of electrons on central atom. Add these.
The sum obtained above gives us idea about the electronic geometry in a molecule. For example if it is two then the electron geometry will be linear, if it is three the geometry will be trigonal planar, four the geometry will be tetrahedral, five the geometry will be trigonal bipyramidal, six the geometry will be octahedral.
Now for molecular geometry we have to consider the number of lone pair of electrons.
The molecular geometry depends upon the repulsion order between electron pairs which is
Bond-bond < lone pair −bond pair < lone pair-lone pair.
(f) SO:
Best Lewis Structure
3
e group geometry:_
shape/molecular geometry:,
(g) CF2CF2
Best Lewis Structure
polarity:
e group arrangement:_
shape/molecular geometry:
(h) (NH4)2SO4
Best Lewis Structure
polarity:
e group arrangement:
shape/molecular geometry:
polarity:
Sketch (with angles):
Sketch (with angles):
Sketch (with angles):
1.
Problem Set 3b
Chem 141
For each of the following compounds draw the BEST Lewis Structure then sketch the molecule (showing
bond angles). Identify (i) electron group geometry (ii) shape around EACH central atom (iii) whether the
molecule is polar or non-polar (iv)
(a) SeF4
Best Lewis Structure
e group arrangement:_
shape/molecular geometry:
polarity:
(b) AsOBr3
Best Lewis Structure
e group arrangement:_
shape/molecular geometry:
polarity:
Sketch (with angles):
Sketch (with angles):
(c) SOCI
Best Lewis Structure
2
e group arrangement:
shape/molecular geometry:_
(d) PCls
Best Lewis Structure
polarity:
e group geometry:_
shape/molecular geometry:_
(e) Ba(BrO2):
Best Lewis Structure
polarity:
e group arrangement:
shape/molecular geometry:
polarity:
Sketch (with angles):
Sketch (with angles):
Sketch (with angles):
Chapter 3 Solutions
Student Solutions Manual for Bettelheim/Brown/Campbell/Farrell/Torres' Introduction to General, Organic and Biochemistry, 11th
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