Question

The chemical shift of signals in both h- mnr and c- mnr is the result of what attribute?

Answer 1

H- NMR :

H-NMR attribute the number of non-equivalence prootns are present in the molecule

suppose ; the molecule CH3CH2CH2CH3 there are only two sets of protons those are both CH3's are same and both CH2's are same . we get two signals

but with the same molecular formula of the above compound (CH3)2CHCH3 will give 3 H-NMR peaks and (CH3)3CH will give only two peaks with different multiplicirty

C- NMR :

C-NMR attribute the number of non-equivalence carbons are present in the molecule