A bonding electron in molecule has about a 50% probability of being closer to one atom and 50% probability of being closer to another atom. This would be characteristic of what kind of bond?
  1. covalent
  2. ionic
  3. mixed
  4. frustrated
  5. symmetric



A bonding electron in molecule has about a 95% probability of being closer to one atom and 5% probability of being closer to another atom. This would be characteristic of what kind of bond?
  1. covalent
  2. ionic
  3. mixed
  4. frustrated
  5. symmetric



When two atoms come together the atomic orbitals (which are isolated around the individual atoms) can deform to create new molecular orbitals which have a probability for the electrons being near either atom. Consider the energy of the molecular orbitals compared to the original atomic orbitals.
  1. The molecular orbitals will have a higher energy.
  2. The molecular orbitals will have a lower energy.
  3. The molecular orbitals could have a higher or lower energy.
  4. Energy will be conserved: the molecular orbitals must have the same energy as the original atomic orbitals.
  5. The molecular orbitals don't have a definite energy.



Which of the following statements are true about energy levels in molecular hydrogen?
  1. They are similar to atomic hydrogen levels, but shifted a bit.
  2. They are exactly like atomic hydrogen levels.
  3. There are states with Coulomb levels whose energies vary like n-2.
  4. There are harmonic oscillator energy levels with even spacings.
  5. They are totally different from atomic hydrogen levels.



Consider the potential energy for the separation of two molecules such as the ones shown in Figure 12.25 in Taylor, et al.. Which of the following potential energy wells would necessarily have the largest spacing between vibrational energy levels?
  1. the one with the highest minimum point
  2. the one with the lowest minimum point
  3. the narrowest one
  4. the widest one
  5. none of the other choices



Which of the following will affect the spacing of the rotational levels in a molecule?
  1. the separation of the nuclei
  2. the mass of the molecules
  3. the number of valence electrons
  4. the angular momentum of the molecule
  5. the orientation of the molecule



The angular momentum of an atom always changes in a rotational transition.
  1. True
  2. False



The vibrational quantum number can change by any amount in a vibrational transition (as long as the final state isn't already occupied).
  1. True
  2. False