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Which outcome results when a silicon crystal lattice is doped with boron atoms?

A)Increased concentration of electron holes
B)Formation of metallic bonding character
C)Suppressed thermal conductivity of the lattice
D)Formation of intrinsic electron-hole pairs

💡 Explanation

When silicon is doped with boron, the boron atoms substitute for silicon atoms in the crystal lattice, boron having one less valence electron creates an electron hole attracting mobile electrons. Therefore an increased concentration of electron holes results, rather than metallic bonding, suppressed thermal conductivity or spontaneous pairs, requiring other mechanisms.

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