The nitride ceramics AIN, GaN, and InN are all semiconductors used in the microelectronics industry. Their band gaps are 580.6, 322.1, and 192.9 kJ/mol, respectively. Which, if any, energies correspond to radiation in the visible region of the spectrum ?

Q: Do metallic elements conduct electricity because they have a small band gap energy?

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Q: the theoretical density in g/cm^3

A: The required solution is as follows:

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