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Concept explainers
The energy-level diagram in Figure 9.36 shows that the sideways overlap of a pair of p
orbitals produces two molecular orbitals, one bonding and one antbonding. In ethylene there is a
pair of electrons in the bonding n orbital between the two carbons. Absorption of a photon of the
appropriate wavelength can result in promotion Of one Of the bonding electrons from the r2p to the
Ir. molecular orbital.
a. Assuming this electronic transition corresponds to the HOMO-LUMO transition, what is the
HOMO in ethylene?
b Assuming this electronic transition corresponds to the HOMO-LUMO transition, what is the
LUMO in ethylene?
c. Is the bond in ethylene stronger or weaker in the excited State than the ground state?
d. Is the C-C bond in ethylene easier to twist in the ground state or in the excited state?
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Chapter 18 Solutions
Chemistry the Central Science 13th Edition Custom for Lamar University
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- k https://app.aktiv.com STARTING AMOUNT 6 58°F Clear + F1 X Dimensional Analysis - Aktiv Chemistry Your Aktiv Learning trial expires on 02/25/25 at 02:14 PM Question 19 of 22 Polyethylene terephthalate (PET) is used in plastic water bottles. A water bottle has a mass of 14.0 grams. Given a density of 1.38 g/cm³, what is the volume of the plastic used to make the water bottle in cm³ ? ADD FACTOR ANSWER RESET ว 100 14.0 0.01 10.1 1000 0.099 1.38 0.001 Q Search F5 -O+ F6 F7 + F3 F2 W E S4 ST #3 F4 % 5 Y R S & 7 cm³ g/cm³ g ם F8 * 00 8 F9 P ل DOD S F10 F11 F12 Insert D F G H J K + 11arrow_forwardA doctor gives a patient 10 Ci of beta radiation. How many betaparticles would the patient receive in 1 minute? (1 Ci = 3.7 x 1010d/s)arrow_forwardPart C IN H N. Br₂ (2 equiv.) AlBr3 Draw the molecule on the canvas by choosing buttons from the Tools (for bonds and + e (×) H± 12D T EXP. L CONT. דarrow_forward
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