Semiconductor

The electrical conductivity of semiconductors lies between that of conductors and non-conductors. Their property of influencing electrical conductivity through doping is used in electrical engineering.

Boronblack-brown

Carbonblack, metallic-looking (graphite); clear (diamond)

14Si

Siliconcrystalline, reflective with bluish-tinged faces

32Ge

Germaniumgrayish-white

34Se

Seleniumgrey metallic-looking, red, and vitreous black allotropes

50Sn

Tinsilvery-white (beta); gray (alpha)

52Te

Telluriumsilvery lustrous gray (crystalline); brown-black powder (amorphous)

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