Concept explainers
The Lewis structure of
a. Draw orbital diagrams for the N atoms to describe bonding in
b Can this bonding be described by either
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General Chemistry: Principles and Modern Applications (11th Edition)
- The 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_forwardIdentify the hybrid orbitals used by boron in BCl3 and in BCl4, the ion formed from the reaction of BCl3 and Cl. Explain your choices.arrow_forwardThe simple valence bond picture of O2 does not agree with the molecular orbital view. Compare these two theories with regard to the peroxide ion, O22. (a) Draw an electron dot structure for O22. What is the bond order of the ion? (b) Write the molecular orbital electron configuration for O22. What is the bond order based on this approach? (c) Do the two theories of bonding lead to the same magnetic character and bond order fo r O22 ss?arrow_forward
- Sketch the resonance structures for the N2O molecule. Is the hybridization of the N atoms the same or different in each structure? Describe the orbitals involved in bond formation by the central N atom.arrow_forwardCinnamaldehyde ocaus naturally in cinnamon oil. (a) What is the most polar bond in the molecule? (b) How many bonds and how many bonds are there? (c) Is cis-trans isomerism possible? If so, draw the isomers of the molecule. (d) Give the hybridization of the C atoms in the molecule. (e) What are the values of the bond angles 1, 2, and 3 ?arrow_forwardIn addition to NF3, two other fluoro derivatives of nitrogen are known: N2F4 and N2F2. What shapes do you predict for these two molecules? What is the hybridization for the nitrogen in each molecule?arrow_forward
- The 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_forwardA useful solvent that will dissolve salts as well as organic compounds is the compound acetonitrile, H3CCN. It is present in paint strippers. (a) Write the Lewis structure for acetonitrile, and indicate the direction of the dipole moment in the molecule. (b) Identify the hybrid orbitals used by the carbon atoms in the molecule to form bonds. (c) Describe the atomic orbitals that form the n bonds in the molecule. Note that it is not necessary to hybridize the nitrogen atom.arrow_forwardBoron trifluoride, BF3, reacts with ammonia, NH3, to form an addition compound, BF3NH3. Describe the geometries about the B and the N atoms in this compound. Describe the hybridization on these two atoms. Now describe the bonding between the B and N atoms, using valence bond theory. Compare the geometries and hybridization of these atoms in this addition compound with that in the reactant molecules BF3 and NH4.arrow_forward
- 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_forwardIt is possible to write a simple Lewis structure for the SO42- ion, involving only single bonds, which follows the octet rule. However, Linus Pauling and others have suggested an alternative structure, involving double bonds, in which the sulfur atom is surrounded by six electron pairs. (a) Draw the two Lewis structures. (b) What geometries are predicted for the two structures? (c) What is the hybridization of sulfur in each case? (d) What are the formal charges of the atoms in the two structures?arrow_forwardSuppose you carry out the following reaction of ammonia and boron trifluoride in the laboratory. (a) What is the geometry of the boron atom in BF3? In H3NBF3? (b) What is the hybridization of the boron atom in the two compounds? (c) Considering the structures and bonding of NH3 and BF3, why do you expect the nitrogen on NH3 to donate an electron pair to the B atom of BF3? (d) BF3 also reacts readily with water. Based on the ammonia reaction above, speculate on how water can interact with BF3.arrow_forward
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