What is the total number of carbon atoms present in one molecule of Spiro[5.5]undecane? — IUPAC and Nomenclature Chemistry Question

💡 Solution & Explanation

The parent name "undecane" inherently indicates there are 11 carbon atoms in the basic skeleton. Alternatively, calculating from the brackets: $5 (\text{ring 1}) + 5 (\text{ring 2}) + 1 \text{ (spiro carbon)} = 11$ carbon atoms.