The valency of Carbon is _________?
Correct answer: C. 4(Tetravalent)
- A. 2(Divalent)
- B. 3(Trivalent)
- C. 4(Tetravalent)
- D. 1(univalent)
Explanation
Carbon has four valence electrons and usually forms four covalent bonds to complete its octet, so its valency is 4 and it is tetravalent. Students may choose 2 because carbon can form a double bond, but a double bond counts as two shared pairs while carbon still has a total valency of 4.
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About Classification of Organic Compounds
Organic compounds are classified by carbon skeleton into open-chain, branched-chain and cyclic compounds, including homocyclic and heterocyclic types. The classification also uses functional groups to distinguish hydrocarbons, halo compounds, alcohols, aldehydes, ketones, carboxylic acids and their derivatives, which is different from naming compounds by IUPAC rules.
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