When a carbon chain contains two or more identical double bonds, how is the word root modified? — IUPAC and Nomenclature Chemistry Question

💡 Solution & Explanation

If a parent chain contains multiple double or triple bonds, numerical prefixes (di, tri, etc.) are used, and the alphabet 'a' is appended to the word root (e.g., But + diene $\rightarrow$ Buta-1,3-diene).