Question

There is an increase in Condutivity when silicon is doped with phosphorus. Give reason

Answer 1

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here ur ans...

Phosphorus atoms have 5 valence electrons which causes n-type doping. ... When numerous phosphorus atoms are substituted for silicon in crystal, many electrons are free which lead to increase in conductivity of silicon

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Answer 2

when numerous posphorus atoms are substituted by silicon many electrons of posphorus will be free which lead to increase in conductivity