Besides hydrogen, which nucleus is listed among common MR spectroscopy nuclei?

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Multiple Choice

Besides hydrogen, which nucleus is listed among common MR spectroscopy nuclei?

Explanation:
MR spectroscopy detects nuclei that have nonzero spin, and after hydrogen, a common nucleus to study is carbon-13 because it sits in virtually all organic molecules and provides useful information about metabolic processes. Carbon-13 has spin 1/2, which yields clear NMR signals, even though its natural abundance is low; signals can be enhanced with longer acquisitions or isotopic labeling. The other options are noble gases whose nuclei either have negligible or impractical MR signals in standard spectroscopy settings, so they aren’t used as commonly as carbon-13.

MR spectroscopy detects nuclei that have nonzero spin, and after hydrogen, a common nucleus to study is carbon-13 because it sits in virtually all organic molecules and provides useful information about metabolic processes. Carbon-13 has spin 1/2, which yields clear NMR signals, even though its natural abundance is low; signals can be enhanced with longer acquisitions or isotopic labeling. The other options are noble gases whose nuclei either have negligible or impractical MR signals in standard spectroscopy settings, so they aren’t used as commonly as carbon-13.

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