Question
A technique developed to study these molecules can also be used to study F-centers in crystals. These molecules both begin and are products of hydrogen atom abstractions. These molecules rapidly undergo disproportionation or dimerization when they are reaction intermediates. These molecules' energy levels experience Zeeman ("ZAY-mun") splitting since they are paramagnetic. The formation of these molecules through (*) homolytic cleavage is denoted by fish-hook arrows. Reactive oxygen species are often examples of these molecules, whose chemical symbols contain a dot. These DNA-damaging molecules are neutralized by antioxidants. For 10 points, name these molecules with unpaired valence electrons. ■END■
ANSWER: free radicals [accept reactive oxygen species or ROS until "reactive"] (The technique in the first clue is EPR spectroscopy.)
<Science - Chemistry>
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Buzzes
Summary
| Tournament | Edition | Exact Match? | TUH | Conv. % | Power % | Neg % | Average Buzz |
|---|---|---|---|---|---|---|---|
| 2025 PACE NSC | 06/07/2025 | Y | 42 | 95% | 19% | 0% | 61.88 |