Electromagnetic Spectrum Video Lessons

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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:

E = 

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

Ag328.1 nm
Fe372.0 nm
Au267.6 nm
K404.7 nm
Ba455.4 nm
Mg285.2 nm
Ca422.7 nm
Na589.6 nm
Cu324.8 nm
Ni341.5 nm


Which element emits photons of highest energy?

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What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Electromagnetic Spectrum concept. You can view video lessons to learn Electromagnetic Spectrum. Or if you need more Electromagnetic Spectrum practice, you can also practice Electromagnetic Spectrum practice problems.

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