What is the total number of carbon atoms in 6-ethyl-2-octyne?Question 4Select one:a.4b.10c.8d.2

To determine the total number of carbon atoms in 6-ethyl-2-octyne, we can break it down as follows:

1. Understand the Structure:

   • "2-octyne" indicates that the main carbon chain contains 8 carbon atoms (since "oct" refers to 8).
   • "6-ethyl" means there is an ethyl group (-C₂H₅) attached to the 6th carbon of the main chain.

2. Count Carbon Atoms in the Main Chain:

   • The main carbon chain for "octyne" (8 carbons) consists of:
     • C1 - C2 - C3 - C4 - C5 - C6 - C7 - C8 (Total = 8 carbons).

3. Count Carbon Atoms in the Ethyl Group:

   • The ethyl group has:
     • C (from -C₂H₅) = 2 carbons.

4. Total Carbon Atoms Calculation:

   • Adding the carbons from the main chain and the ethyl group: $8 \text{ (from octyne)} + 2 \text{ (from ethyl)} = 10 \text{ carbons}.$

Final Answer

The total number of carbon atoms in 6-ethyl-2-octyne is 10 (option b).