I had a question recently that asked me about n-pentane. I was confused as I had never heard of 'n-pentane', so I asked about it and was told that n means primary, and that you can have n, s, or t alkanes: primary, secondary, or tertiary.
I should have followed up and asked what that meant, but I decided to look online. The problem is I can't find anything online. I know the difference between 1°, 2°, 3°, and 4° carbons, but what is a secondary alkane? Is there such a thing as s-pentane? What does that even mean? I see n-pentane mentioned around, but it appears redundant.
Any help would be appreciated.