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- In the electron paramagnetic resonance spectrum ofthe propyl radical, C3H5, the hyperfine splitting constant is1.45 mT for coupl ing to the protons on the terminal carbonatoms and 0.406 mT for coupl ing to the protons attached tothe central carbon atom. Taking 0= 2.25 mT, use the McConnellequation to estimate the unpaired electron density on eachcarbon atom.Answer Q7, 8, 9 showing detailed explanations.||| An unknown has the formula C H₂O. The IR spectrum of this substance has a strong vibration near 1700 cm-¹. Which structure below is consistent with these data? OH || IV -OH A) I B) II C) III D) IV