Question

Que No (9) Which are Trivalent (three
valence electrons) impurity atoms
which produce P type semiconductor
O (a) Phospurus, arsenic, antinomy
0 (b) Boron Aluminum, Gallium
O (c) Sodium, copper, iron
0 (d)zinc, silver, gold​

Answer 1

Answer:

The correct statement is (d).

In a p-type semiconductor, the holes are the majority carriers, while the electrons are the minority carriers. A p-type semiconductor is obtained when trivalent atoms, such as aluminium, are doped in silicon atoms

Answer 2

Answer:

Answer

Ans: Trivalent impurities are called

Acceptor

impurities.

Since the trivalent atoms, i.e. dopant having valency 3 i.e an element whose each atom has 3 valence electrons is called Trivalent impurity. For ex. Indium ,Gallium,Aluminium,Boron ,etc. These impurities are known as Acceptor impurities.As they accept electrons from the covalent bonds of Si, Ge. These create p type semiconductor.