CnH2n
CnH2n + 2
CnH2n - 2
CnH2n - 1
Answer is Right!
Answer is Wrong!
The correct answer is A. CnH2n.
Alkenes are hydrocarbons that have a double bond between two carbon atoms. The general formula for alkenes is CnH2n, where n is the number of carbon atoms in the molecule. For example, ethene (C2H4) and ethane (C2H6) are both alkenes.
Option B is incorrect because it is the general formula for alkanes, which are hydrocarbons that have only single bonds between carbon atoms. Option C is incorrect because it is the general formula for alkynes, which are hydrocarbons that have a triple bond between two carbon atoms. Option D is incorrect because it is the general formula for cycloalkanes, which are hydrocarbons that have a ring of carbon atoms.