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1. The parent molecule is the longest carbon chain; and its prefix is followed by the suffix –ene.
2. The carbon atoms in the chain are numbered such that the carbon atoms joined by the double bonds get the lowest possible numbers.
3. The position of the substituent groups is indicated by showing the position of the carbon atom to which they are attached.
4. In case of 2 double bonds in an alkene molecule, the carbon atom to which each double bond is attached must be identified.
Kavungya answered the question on April 27, 2019 at 12:31
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