alleryThe valency of carbon is
A4
B3
C2
D6
Answer & Solution
Correct answer: A. 4
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: syllabus Science, Ch 4 "Carbon and its Compounds", §4 introduction_
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