Chapter 6: Q11DQ (page 1401)
Shows that for the ground state of the potassium atom, the outermost electron is in a 4s state. What does this tell you about the relative energies of the 3d and 4s levels for this atom? Explain.
The 3d state have higher energy than 4s state.
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The bonding of gallium arsenide ( ) is said to be ionic and covalent. Explain.
In the process of internal conversion, a nucleus decays from an excited state to a ground state by giving the excitation energy directly to an atomic electron rather than emitting a gamma-ray photon. Why can this process also produce ray photons?
The wave functions for a particle in a box (see Fig. 40.12a) are zero at certain points. Does this mean that the particle can’t move past one of these points? Explain.
Human skin is relatively insensitive to visible light, but ultraviolet radiation can cause severe burns. Does this have anything to do with photon energies? Explain.
Explain why Fig. 38.4 shows that most photoelectrons have kinetic energies less than , and also explain how these smaller kinetic energies occur.
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