Related Questions

Addition of pentavalent impurity to a semiconductor creates many
A Free electrons
B Holes
C Valence electrons
D Bound electrons
When a pentavalent impurity is added to a pure semiconductor, it becomes
A An insulator
B An intrinsic semiconductor
C p-type semiconductor
D n-type semiconductor
A trivalent impurity has valence electrons
A 4
B 5
C 6
D 3
A semiconductor has generally ___________ valence electrons.
A 2
B 3
C 6
D 4
Which of the following elements has three valence electrons?
A Al
B Ag
C Au
D Ca
How may valence electrons does a silicon atom have?
A 0
B 1
C 2
D 4
E None of the above
In a metal, the valence electrons
A Are not shared
B Are shared only between neighbouring atoms
C Are shared by all atoms
D Either B or C
Is an element used in semiconductors whose atoms have three valence electrons.
A An acceptor
B A donor
C Germanium
D Silicon
A free electron is a valence electron that has broken away from its parent atom.
A True
B False
সুপরিবাহী পদার্থে Valence Band এবং conduction band-
A আলাদা থাকে
B ওভারল্যাপ থাকে
C অনেক দূরে থাকে
D কোনটিই নয়

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