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a) An eschellette grating has a groove density of 1000.0 grooves/mm. White light irradiates the grating at an incident angle of 20.0°. What is the reflection angle for first-order reflection of blue light at 400.0 nm? b) The 4s →3d transition for the mystery atom has an absorption wavelength of 1000 Å. In a flame with a temperature of 3000° C, what is the ratio of excited to ground state electrons?
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Transcribed Image Text:a) An eschellette grating has a groove density of 1000.0 grooves/mm. White light irradiates the grating at an incident angle of 20.0°. What is the reflection angle for first-order reflection of blue light at 400.0 nm? b) The 4s →3d transition for the mystery atom has an absorption wavelength of 1000 Å. In a flame with a temperature of 3000° C, what is the ratio of excited to ground state electrons?
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