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Pure non-metals, labelled A and B, are held at room temperature (300 K) and the number density of electrons free to move determined. The

Pure non-metals, labelled A and B, are held at room temperature (300 K) and the number density of electrons free to move determined. The only difference between the materials is the band-gap, and the experiment finds that n/n is 4.8104. If the band-gap of material A is 1.491 eV, what is the band-gap of material B?

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