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p - type semi-conductors are made by mixing silicon with impurities of - Chemistry

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p - type semi-conductors are made by mixing silicon with impurities of-

  1. germanium
  2. boron
  3. arsenic  
  4. antimony
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Solution

(c) Boron
Boron (electronic configuration 1s2 2s2 2p1) is one electron deficient as compared to the valence electrons in the silicon atom. On adding boron to silicon, some atoms of boron occupy some sites of silicon atoms.

Concept: Electrical Properties - Applications of N-type and P-type Semiconductors
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