Assume that the de-Broglie wave associated with an electron can for... VIDEO
Assume that the de-Broglie wave associated with an electron can form a standing wave between the atoms arranged in a one-dimensional array with nodes at each of the atomic sites. It is found that one such standing wave is formed, if the distance \( d \) between the atoms of the array is \( 2 \AA \). A similar standing wave is again formed, if \( d \) is increased to \( 2.5 \AA \) but not for any intermediate value of \( d \).
The energy of the electron is
(a) \( 160 \mathrm{eV} \)
(b) \( 150.8 \mathrm{eV} \)
(c) \( 145 \mathrm{eV} \)
(d) \( 100 \mathrm{eV} \)
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