Indian Forest Service (Mains), Chemistry optional · 2021 · Paper II
Q3(c)(i). ESR resonance field
Question
Hydrogen-atom ESR is measured at 9.5 GHz. Find the applied magnetic field for g = 2.0026, using μ_B = 9.274 × 10⁻²⁴ J T⁻¹.
Answer in brief
The resonance field is approximately 0.339 T (339 mT), neglecting hyperfine displacement from the centre.
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CoversESR resonance conditiong factorBohr magnetonhν = gμBBX-band
All parts of Question 3
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