(c) Mercury (atomic weight 200.6) has a strong green line at 546.1 nm with an Einstein A coefficient of 4.87 𝗑10

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answerhappygod
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(c) Mercury (atomic weight 200.6) has a strong green line at 546.1 nm with an Einstein A coefficient of 4.87 𝗑10

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(c) Mercury (atomic weight 200.6) has a strong green line at
546.1 nm with an Einstein A coefficient of 4.87 đť—‘107 s-1. Calculate
the natural and Doppler line widths at room temperature. Hence,
explain why a low-pressure mercury lamp emits a narrower linewidth
than a sodium lamp.
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