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Chapter 38: Q. 22 (page 1114)
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\| An electron with 2.00 mathrm{eV of kinetic energy collides with the atom shown in FIGURE EX38.24.
a. Is the electron able to excite the atom? Why or why not?
b. If your answer to part a was yes, what is the electron's kinetic energy after the collision?
Consider a small virus having a diameter of 10 nm. The atoms of the intracellular fluid are confined within the virus. Suppose we model the virus as a 10-nm-long “box.” What is the ground state energy (in eV) of a sodium ion confined in this box?
An electron confined in a one-dimensional box is observed, at different times, to have energies of 12 eV, 27 eV, and 48 eV. What is the length of the box?
17. What is the de Broglie wavelength of a neutron that has fallen in a vacuum chamber, starting from rest?
In the following Figure is an energy-level diagram for a simple atom. What wavelengths, in nm, appear in the atom’s (a) emission spectrum and (b) absorption spectrum?
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