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Compute the typical de Broglie wavelengt...

Compute the typical de Broglie wavelength of an electron in a metal at `27^(@)C` and compare it with the mean separation between two electrons in a metal which is given to be about `2 xx 10^(-10) m.`

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Using the same formula as, `lambda = 6.2 xx 10^(-9) m` which is much greater than the given inter-electron separation.
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