MCQ
A hole is:
- AA positively charged electron.
- BAn electron in the valence band.
- CAn unfilled covalent bond.
- DAn excess electron in covalent bond.
✓
Answer
- An unfilled covalent bond.
Explanation:
When the covalent bond breaks, electrons are freed from atom. The departure of electron from valence band creates vacancy in bond, this vacancy is known as hole. Hence, a hole is an unfilled covalent bond.
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