Related Questions

A pentavalent impurity has ___________ Valence electrons
A 3
B 5
C 4
D 6
Addition of trivalent impurity to a semiconductor creates many
A Holes
B Free electrons
C Valence electrons
D Bound electrons
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
Which of the following is a trivalent element?
A Boron
B Indium
C Aluminium
D All these
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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