
Concept explainers
(a)
Interpretation:
Any of two THM molecules Lewis structures have to be drawn.
Concept introduction:
Lone pairs are represented in Lewis structures which represents lines for the bonding between atoms of a molecule and the dots for the lone pairs of electrons that may exist in the molecule.
Lewis structure otherwise known as Lewis dot diagrams (or) electron dot structures shows the bond between atoms and lone pairs of electrons that are present in the molecule. Lewis structure represents each atom and their position in structure using the chemical symbol. Excess electrons forms the lone pair are given by pair of dots, and are located next to the atom.
(b)
Interpretation:
How the THMs differ from CFCs in their chemical composition, the reason needs to be explained.
Concept introduction:
Lone pairs are represented in Lewis structures which represents lines for the bonding between atoms of a molecule and the dots for the lone pairs of electrons that may exist in the molecule.
Lewis structure otherwise known as Lewis dot diagrams (or) electron dot structures that show the bond between atoms and lone pairs of electrons that are present in the molecule. Lewis structure represents each atom and their position in structure using the chemical symbol. Excess electrons forms the lone pair are given by pair of dots, and are located next to the atom.
(c)
Interpretation:
How the THMs differ from CFCs in their physical properties, the reason needs to be explained.
Concept introduction:
Lone pairs are represented in Lewis structures which represents lines for the bonding between atoms of a molecule and the dots for the lone pairs of electrons that may exist in the molecule.
Lewis structure otherwise known as Lewis dot diagrams (or) electron dot structures that show the bond between atoms and lone pairs of electrons that are present in the molecule. Lewis structure represents each atom and their position in structure using the chemical symbol. Excess electrons forms the lone pair are given by pair of dots, and are located next to the atom.

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Chapter 8 Solutions
Chemistry In Context
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