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Chapter 10: Bonding: Molecules and Solids

Expert-verified
Modern Physics
Pages: 413 - 474
Modern Physics

Modern Physics

Book edition 2nd Edition
Author(s) Randy Harris
Pages 633 pages
ISBN 9780805303087

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Illustration

75 Questions for Chapter 10: Bonding: Molecules and Solids

  1. The left diagram in FIGURE 10.1 might represent a two atom crystal with two bands. Basing your argument on the kinetic energy inside either individual well, explain why both energies in the lower band should be roughly equal to that of the n=1 atomic state and why both energies in the upper should roughly equal that of the n=2 atomic state

    Found on Page 413

  2. Upon what definitions do we base the claim that the Ψ2px and Ψ2py states of equations 10−1 are related to x and y just as Ψ2pz is to z.

    Found on Page 413

  3. Section 10.2 discusses - bonds and σ- bonds for p - states and π-bonds for s-states but not σ- bonds for π - states. Why not?

    Found on Page 413

  4. Of N2, O2 and F2, none has an electric dipole moment, but one does have a magnetic dipole moment, which one, and why?

    Found on Page 413

  5. It takes less energy to dissociate a diatomic fluorine molecule than a diatomic oxygen molecule (in fact, less than one-third as much). Why is it easier to dissociate fluorine?

    Found on Page 413

  6. why is covalent bonding directional, while ionic bonding is not?

    Found on Page 413

  7. For the four kinds of crystal binding – covalent, ionic, metallic, and molecular- how would the destiny of valence electrons vary throughout the solid? Would it be constant, centered on the atoms, or largest between the atoms? Or would it alternate, with a net charge density positive at one atom and negative at the next?

    Found on Page 413

  8. Brass is a metal consisting principally of copper alloyed with a smaller amount of zinc, whose atoms do not alternate in a regular pattern in the crystal lattice but are somewhat randomly scattered about. The resistivity of brass is higher than that of either copper or zinc at room temperature, and it drops much slower as the temperature is lowered. What do these behaviors tell us about electrical conductivity in general?

    Found on Page 466

  9. Explain the dependence of conductivity on temperature for conductors and for semiconductors.

    Found on Page 466

  10. In the boron atom, the single 2p electron does not completely fill any 2p spatial state, yet solid boron is not a conductor. What might explain this? (It may be helpful to consider again why beryllium is not an insulator.)

    Found on Page 466

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