This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: According to the frontier orbital theory, the symmetry of electrocyclic reactions is determined by: ... (Read 55 times)

brutforce

  • Hero Member
  • *****
  • Posts: 540
on: Aug 23, 2018
According to the frontier orbital theory, the symmetry of electrocyclic reactions is determined by:
 a. the total number of double bonds present in the molecule.
 b. the symmetry of the HOMO.
 c. the symmetry of the LUMO.
 d. proper orientation of the HOMO of one atom with the LUMO of the other atom.

Question 2

Which of the following statements is not true according to molecular orbital (MO) theory?
 a. Antibonding orbitals are higher in energy than the corresponding bonding orbital.
 b. The head-on overlap of an s and a p atomic orbital can produce a  molecular orbital.
 c. A  molecular orbital forms only from the combination of p atomic orbital wave functions.
 d. The subtractive combination of atomic orbital wave functions produces a bonding molecular orbital.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

al

  • Sr. Member
  • ****
  • Posts: 344
Reply #1 on: Aug 23, 2018
Answer to Question 1

b

Answer to Question 2

d


brutforce

  • Member
  • Posts: 540
Reply 2 on: Aug 23, 2018
Wow, this really help

coreycathey

  • Member
  • Posts: 333
Reply 3 on: Yesterday
Great answer, keep it coming :)

« previous next »
 

Did you know?

GI conditions that will keep you out of the U.S. armed services include ulcers, varices, fistulas, esophagitis, gastritis, congenital abnormalities, inflammatory bowel disease, enteritis, colitis, proctitis, duodenal diverticula, malabsorption syndromes, hepatitis, cirrhosis, cysts, abscesses, pancreatitis, polyps, certain hemorrhoids, splenomegaly, hernias, recent abdominal surgery, GI bypass or stomach stapling, and artificial GI openings.

Did you know?

Every flu season is different, and even healthy people can get extremely sick from the flu, as well as spread it to others. The flu season can begin as early as October and last as late as May. Every person over six months of age should get an annual flu vaccine. The vaccine cannot cause you to get influenza, but in some seasons, may not be completely able to prevent you from acquiring influenza due to changes in causative viruses. The viruses in the flu shot are killed—there is no way they can give you the flu. Minor side effects include soreness, redness, or swelling where the shot was given. It is possible to develop a slight fever, and body aches, but these are simply signs that the body is responding to the vaccine and making itself ready to fight off the influenza virus should you come in contact with it.

Did you know?

Green tea is able to stop the scent of garlic or onion from causing bad breath.

Did you know?

The heart is located in the center of the chest, with part of it tipped slightly so that it taps against the left side of the chest.

Did you know?

Hip fractures are the most serious consequences of osteoporosis. The incidence of hip fractures increases with each decade among patients in their 60s to patients in their 90s for both women and men of all populations. Men and women older than 80 years of age show the highest incidence of hip fractures.

Mars's average distance from the Sun is roughly 230 million km (1.5 AU) and its orbital period Mars's average distance from the Sun is roughly 230 million km (1.5 AU) and its orbital period
Reactions 1 through 4 are necessary for the formation of each peptide bond. Reactions 1 through 4 are necessary for the formation of each peptide bond.
The heat range of a spark plug is determined by the distance the heat has to flow from the tip to ... The heat range of a spark plug is determined by the distance the heat has to flow from the tip to ...
Effect of increasing temperature or lowering deltGo+ on the rates of reactions Effect of increasing temperature or lowering deltGo+ on the rates of reactions
Binding site variation for transcription factor CEBPA along gene PCK1 as determined by ChIP Binding site variation for transcription factor CEBPA along gene PCK1 as determined by ChIP
Superior Orbital Fissure Superior Orbital Fissure
Video: Pneumonia Animation

For a complete list of videos, visit our video library