Chemically similar particles are those whose electrical surroundings are the same. If two protons can switch places by rotating or reflecting one another, they are chemically identical.
Protons that are chemically equivalent only generate one signal.
All three Ha protons and all three Hb protons are chemically equal to one another, according to NMR nomenclature. However, the Ha protons and the Hb protons are not chemically similar.
The resonance frequency of the Ha protons differs from that of the Hb protons as a result.
A molecule with equivalent protons emits a single signal. The corresponding protons of ethane are four in ethylene, two in acetylene, and six in benzene.
A molecule, each of which results in an absorption and the absorptions are widely separated in the spectrum are called nonequivalent proton.
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