Chapter 5 Homework
What is the MO configuration for N2-?
(σ2s)^2 (σ*2s)^2 (π2p)^4 (σ2p)^2 (π*2p)^1
Bond Order: B2
1
Which of the following statements could be true regarding polar molecules? 1. A polar molecule may have one or more lone pairs. 2. A polar molecule will not contain polar bonds. 3. A polar molecule has an uneven distribution of electron density. 4. A polar molecule will never contain nonpolar bonds. 5. The bond dipoles in a polar molecule will cancel.
1. A polar molecule may have one or more lone pairs. 3. A polar molecule has an uneven distribution of electron density.
Given the table of electronegativities provided and the shape of PBr3, which of the following options correctly describe the overall polarity? 1. Each P-Br bond is polar. 2. The lone pair contributes to the overall polarity of the molecule. 3. None of the bond dipoles cancel. 4. Two bond dipoles can cancel, as they are at 180° to each other.
1. Each P-Br bond is polar. 2. The lone pair contributes to the overall polarity of the molecule. 3. None of the bond dipoles cancel.
Sort the following in order of increasing bond length: B2, B2+, B2-
B2-, B2, B2+
Bond Order: Be2+
Bond Order = 1/2
Planar or Nonplanar: H2NNH2
Nonplanar
Polar or Nonpolar: BH3
Nonpolar
Polar or Nonpolar: CCl4
Nonpolar
Polar or Nonpolar: CO2
Nonpolar
Polar or Nonpolar: O
Nonpolar
Polar or Nonpolar: O3
Nonpolar
Paramagnetic or Diamagnetic: C2^2+, C2^0, C2^2-
Paramagnetic: C2^2+ Diamagnetic: C2^0, C2^2-
Planar or Nonplanar: N2F2
Planar
Planar or Nonplanar: NCCN
Planar
Polar or Nonpolar: CH2Cl2
Polar
Polar or Nonpolar: CH2O
Polar
Polar or Nonpolar: CHCl3
Polar
Polar or Nonpolar: CO2
Polar
Polar or Nonpolar: H2O
Polar
Polar or Nonpolar: NF3, BF3
Polar: NF3 Nonpolar: BF3
Molecular Geometry: ICl2-
linear
Electronic Geometry: IF5
octahedral
Hybridization: (steric number) SN = 2
sp
Hybridization: (steric number) SN = 3
sp2
Hybridization: COCl2
sp2
Hybridization: (steric number) SN = 4
sp3
Hybridization: PCl3
sp3
Hybridization: SF2
sp3
Hybridization: SF4
sp3d
Hybridization: SF6
sp3d2
Molecular Geometry: IF5
square pyramidal
Molecular Geometry: NH4+
tetrahedral
Molecular Geometry: BCl3
trigonal planar
Molecular Geometry: BF3
trigonal planar
Molecular Geometry: - steric number = 4 - 1 lone pair
trigonal pyramidal
Molecular Geometry: ClO3-
trigonal pyramidal
Molecular Geometry: NF3
trigonal pyramidal
Molecular Geometry: PBr3
trigonal pyramidal
