A nucleus with an even atomic number or an even mass number has a nuclear spin that can be observed by the nmr spectrometer.
NMR can not measure nuclei where quantum spin is 0 since it requires the presence of this magnetic moment. Nearly all isotopes with an even count of protons but instead neutrons lack a magnetic moment, making them impossible to detect with NMR.
Nuclear spin refers to the magnetic characteristics of hydrogen nuclei (protons). They act like small, vector-represented rotating magnets. Net magnetization, also known as macroscopic magnetization, would be the total of all the small magnetic fields produced by each spin. These vectors' directions are often distributed at random.
Therefore, a nucleus with an even atomic number or an even mass number has a nuclear spin that can be observed by the nmr spectrometer.
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