Which of the following statements are TRUE for first-order analyses of NMR spect

Question

Which of the following statements are TRUE for first-order analyses of NMR spectra (the type of analysis most commonly done).
The difference in absorption frequency is equal to or less than 6 J.
First-order multiplets are symmetrical, and their chemical shift is given by the position of the first peak in the multiplet.
The peak multiplicity in a proton spectrum is (n+1), where n is the number of adjacent, equivalent hydrogens.
Deuterium, an NMR-active nucleus, has a nuclear spin quantum number of 1.
The spin-multiplicity of the proton NMR absorption of the methyl group in ethanol-OD is 4.

Explanation / Answer

The difference in absorption frequency is equal to or less than 6 J.

The peak multiplicity in a proton spectrum is (n+1), where n is the number of adjacent, equivalent hydrogens.

The spin-multiplicity of the proton NMR absorption of the methyl group in ethanol-OD is 4.

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