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. . . . . Insulators, Conductors, Semiconductors Inorganic Materials. . . . E. valence band filled. conduction band empty. Forbiddenregion. Eg > 5eV. . Bandgap. . E. conduction band . Eg < 5eV. Bandgap. . . . . . -. electronhole. . . . E. . valence band. partially-filled
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