A description of bonding in
a. Construct diagrams similar to Figure 11-33 to indicate the overlap of the three atomic orbitals in forming the three molecular orbitals. Assume that the order of energy of the molecular orbitals is bonding MO< nonbonding MO < antibonding MO.
b. Sketch a molecular orbital energy-level diagram, and assign the appropriate number of electrons from fluorine and xenon to the molecular orbitals. What is the bond order?
c. With the aid of VSEPR theory, show that this molecular orbital description based on three-center bonds works well for
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General Chemistry: Principles and Modern Applications - With Solutions Manual and Modified MasteringChemistry Code
- In the molecular orbital mode l, compare and contrast bonds with bonds. What orbitals form the bonds and what orbitals form the bonds? Assume the z-axis is the internuclear axis.arrow_forwardThe structure of amphetamine, a stimulant, is shown below. (Replacing one H atom on the NH2, or amino, group with CH3 gives methamphetamine a particularly dangerous drug commonly known as speed.) (a) What are the hybrid orbitals used by the C atoms of the C6 ring. by the C atoms of the side chain, and by the N atom? (b) Give approximate values for the bond angles A, B, and C. (c) How many bonds and bonds are in the molerule? (d) Is the molecule polar or nonpolar? (e) Amphetamine reacts readily with a proton (H+) in aqueous solution. Where does this proton attach to the molecule? Explain how the electrostatic potential map predicts this site of protonation.arrow_forwardThe molecular orbital diagram of NO shown in Figure 10.47 also applies to the following species. Write the molecular orbital electron configuration of each, indicating the bond order and the number of unpaired electrons. (a) CN (b) CO (c) BeB (d) BC+ Figure 10.47 Molecular orbital diagram for nitric oxide (NO). The molecular orbital diagram for NO predicts a bond order of 2.5 and predicts that the molecule is paramagnetic with one unpaired electron. These predictions are verified by experimental measurements.arrow_forward
- Which of the following molecules or ions are para-magnetic? What is the highest occupied molecular orbital (HOMO) in each one? Assume the molecular orbital diagram in Figure 9.16 applies to all of them. (a) NO (b) OF (c) O22 (d) Ne2+arrow_forwardCompare and contrast the molecular orbital and ionic bonding descriptions of LiF.arrow_forwardDo lone pairs about a central atom affect the hybridization of the central atom? If so, how?arrow_forward
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- What hybridization is required for central atoms that have a tetrahedral arrangement of electron pairs? A trigonal planar arrangement of electron pairs? A linear arrangement of e lectron pairs? How many unhybridized p atomic orbitals are present when a central atom exhibits tetrahedral geometry? Trigonal planar geometry? Linear geometry? What are the unhybridized p atomic orbitals used for? Describe the bonding in H2S, CH4, H2CO, and HCN, using the localized electron model.arrow_forwardThe sulfamate ion, H2NSO3, can be thought of as having been formed from the amide ion, NH2, and sulphur trioxide, SO3. (a) What are the electron-pair and molecular geometries or the amide ion and or SO3? What are the hybridizations of the N and S atoms, respectively? (b) Sketch a structure for the sulfamate ion, and estimate the bond angles. (c) What changes in hybridization do you expect for N and S in the course of the reaction NH2 + SO3 H2NSO3? (d) Is SO3 the donor of an electron pair or the acceptor of an electron pair in the reaction with amide ion? Does the electrostatic potential map shown below confirm your prediction?arrow_forwardMinoxidil (C9H15N15O) is a compound produced by the Pharmacia Upjohn Company that has been approved as a treatment for some types of male pattern baldness. Note that in such shorthand ring structures, each point where lines meet is a carbon atom and that the hydrogen atoms bonded to the carbon atoms in the rings have been omitted. There will be four bonds to each carbon atom. a. Give the hybridization of the five nitrogen atoms in minoxidil. b. Give the hybridization of each of the nine carbon atoms in minoxidil. c. Give the approximate values for the bond angles marked a, b, c, d, e, and f. d. Including all the hydrogen atoms, how many bonds exist in minoxidil? e. How many bonds exist in minoxidil?arrow_forward
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