How many different kinds of protons are in 1-chlorohexane? I found the answer to be 6 but I can only find 5 different types of protons. (Each of 6 carbons is bonded to a different type of protons, so the answer is 6. - GS).

^Can you explain how the protons connected to the 3 and 4 carbons of 1-chlorohexane are different? (Substitution of a proton of the first type with chlorine would give 1,3-dichlorohexane, while the substitution of the second one - 1,4-dichlorohexane. Substitution of chemically equivalent protons leads to the same compound. - GS).