The compound 1,2-dichloroethane (C 2 H 4 Cl 2 ) is nonpolar, while cis -dichloroethylene (C 2 H 2 Cl 2 ) has a dipole moment: The reason for the difference is that groups connected by a single bond can rotate with respect to each other, but no rotation occurs when a double bond connects the groups. On the basis of bonding considerations, explain why rotation occurs in 1,2-dichloroethane but not in cis- dichloroethylene.
The compound 1,2-dichloroethane (C 2 H 4 Cl 2 ) is nonpolar, while cis -dichloroethylene (C 2 H 2 Cl 2 ) has a dipole moment: The reason for the difference is that groups connected by a single bond can rotate with respect to each other, but no rotation occurs when a double bond connects the groups. On the basis of bonding considerations, explain why rotation occurs in 1,2-dichloroethane but not in cis- dichloroethylene.
The compound 1,2-dichloroethane
(C
2
H
4
Cl
2
)
is nonpolar, while cis-dichloroethylene
(C
2
H
2
Cl
2
)
has a dipole moment: The reason for the difference is that groups connected by a single bond can rotate with respect to each other, but no rotation occurs when a double bond connects the groups. On the basis of bonding considerations, explain why rotation occurs in 1,2-dichloroethane but not in cis- dichloroethylene.
Polymers that can conduct electricity are called conducting polymers. Some polymers can be made semiconducting; others can benearly metallic. Polyacetylene is an example of a polymer that is a semiconductor. It can also be doped to increase its conductivity.Polyacetylene is made from acetylene in a reaction that looks simple but is actually tricky to do:H—C≡ C— HAcetylene
[— CH=CH— ]n
Polyacetylene(a) What is the hybridization of the carbon atoms, and the geometry around those atoms, in acetylene and in polyacetylene?(b) Write a balanced equation to make polyacetylene from acetylene.
What atomic or hybrid orbitals make up the sigma bond between Si and H in silane, SiH4?
Consider a ring system made up of 6 atoms (each one contributing a p atomic orbital to make 6 pi molecular orbitals). If the system is filled with 8 electrons, there will ----orbitals containing pairs of electrons and------ orbitals containing single, unpaired electrons. Hint: Use a Frost Circle.
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Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell