Electromagnetic Spectrum Video Lessons

Concept:

# Problem: 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. Some characteristic wavelengths for some of the elements areAg328.1 nmFe372.0 nmAu267.6 nmK404.7 nmBa455.4 nmMg285.2 nmCa422.7 nmNa589.6 nmCu324.8 nmNi341.5 nmWhich element emits photons of highest energy?

###### FREE Expert Solution

We have to determine, which element emits photons of highest energy, using the given wavelengths.

The energy of photon is related to its frequency by this formula:

Where,

h = Planck's constant (6.626×10–34 J•s)

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###### Problem Details

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. Some characteristic wavelengths for some of the elements are

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

Which element emits photons of highest energy?