The valency of carbon is
A{'text': '4', 'label': 'A'}
B{'text': '3', 'label': 'B'}
C{'text': '2', 'label': 'C'}
D{'text': '6', 'label': 'D'}
Answer & Solution
Correct answer: A. {'text': '4', 'label': 'A'}
1. Carbon has 6 electrons: 2 in K-shell, 4 in L-shell.
2. To attain nearest noble gas configuration, it needs 4 more electrons.
3. It shares 4 electrons with other atoms via covalent bonds.
4. So carbon's valency is 4 (tetravalent).
_Source: NCERT Class 10 Science, Ch 4 "Carbon and its Compounds", §4 introduction_
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