g Is a nucleus that absorbs at 4.13 δ more shielded or less shielded than a nucleus that absorbs at 11.45 δ? Does the nucleus that absorbs at 4.13 δ require a stronger applied field or a weaker applied field to come into resonance than the nucleus that absorbs at 11.45 δ?

A nucleus that absorbs at is less shielded and a nucleus that absorbs at will require a stronger applied field

Explanation:

While interpreting the data in NMR, the positions of signals are studied.

The nucleus/ protons having a higher value of are said to be less shielded. They are said to be upfield.

The nucleus/protons having a lower value of are said to be more shielded. They are said to be downfield.

So, a nucleus that absorbs at is less shielded by the nucleus that absorbs at

Also, the less shielded nucleus/protons will require a weak applied field to come into resonance than the more shielded nucleus/protons

So, a nucleus that absorbs at will require a stronger applied field to come into resonance than the nucleus that absorbs at

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