Question

Question #4767a

Answer 1

septet

Explanation:

Remember that the general rule for splitting is that if a hydrogen has `n` hydrogens neighboring it, there are `n+1` peaks. In this case, there are 6 neighbors, so there will be 7 peaks. This is known as "septet".

Why are there 6 neighbors? Let's talk about "neighboring hydrogens". Look at atom the hydrogen in question is bonded to. You have to this atom's adjacent C, N, O, S, P to see if there are any hydrogens bonded to those adjacent atoms. These are the neighboring hydrogens. In this case, there are two adjacent methyl groups. These give 3 neighboring hydrogens each, totaling 6. Using the n+1 rule, you get the septet pattern.