Which phenomenon creates energy bands from overlapping atomic potential functions in crystalline silicon?

💡 Explanation

When atoms in crystalline silicon are closely packed, the Pauli exclusion principle forces electrons into distinct energy states forming energy bands as overlapping atomic orbitals can only accommodate two electrons with opposite spins. Therefore, energy bands form due to the exclusion principle, rather than quantum confinement based on size, wave interference dependent on wavelength, or uncertainty due to simultaneous measurements.

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