Spectroscopy help

The C atom can only form 4 bonds so there isn’t 9 protons bonded to the same carbon
the integration value (peak area) just shows the number of protons in the same environment in this case 3 CH3 groups bonded to the same carbon hence why the integration value is 9

I hope that is somewhat helpful I tried my best to explain it, if you need anymore help just ask

thanks I understand that part but I don’t get why there are 4 carbons

There are 9 protons in the same environment and so 3 the CH3 groups have to be bonded to the same central C atom which will give a singlet

The data sheet shows it as HC-R where the R in this case is the central C atom, and the 9 protons are divided to make the same environment giving the 3 other C atoms

I’m still confused, but you explain well thanks.
im just confused about the fact that in the table it say H9-C showing one C not 3

also can u be my chemistry tutor 🥹🙏
my exams are in 2 months