Ncert Exercises & Solutions

Hole is:

1.	an anti-particle of electron.
2.	a vacancy created when an electron leaves a covalent bond.
3.	absence of free electrons.
4.	an artificially created particle.

(b) Hint: The hole is created by the absence of electrons.

The concept of hole describes the lack of an electron at a position where one could exist in an atom or atomic lattice. If an electron is excited into a higher state, it leaves a hole in its old state.

Thus, the hole can be defined as a vacancy created when an electron leaves a covalent bond.

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