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Certain elements emit light of a specific wavelength when they are burned. Historically, chemists used such emission wavelengths to determine whether specific elements were present in a sample. Characteristic wavelengths for some of the elements are given in the following table:
![](data:image/png;base64,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)
(a) Determine which elements emit radiation in the visible part of the spectrum. (b) Which element emits photons of highest energy? Of lowest energy? (c) When burned, a sample of an unknown substance is found to emit light of frequency 9.23 × 1014 s- 1. Which of these elements is probably in the sample?
Certain elements emit light of a specific wavelength when they are burned. Historically, chemists used such emission wavelengths to determine whether specific elements were present in a sample. Characteristic wavelengths for some of the elements are given in the following table:
(a) Determine which elements emit radiation in the visible part of the spectrum. (b) Which element emits photons of highest energy? Of lowest energy? (c) When burned, a sample of an unknown substance is found to emit light of frequency 9.23 × 1014 s- 1. Which of these elements is probably in the sample?
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Trinidad TremblayLv2
21 May 2020
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