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 6.59 × 1014s-1. Which of these elements is probably in the sample?

Transcribed Image Text:

372.0 nm 404.7 nm 285.2 nm 589.6 nm 341.5 nm Fe Ag Au Ba Ca Cu 328.1 nm 267.6 nnm 455.4 nm 422.7 nm 324.8 nm Mg Na Ni