What is the relationship between wavelength and the frequency?

The wavelength and frequency of light are closely related. The higher the frequency, the shorter the wavelength. Because all light waves move through a vacuum at the same speed, the number of wave crests passing by a given point in one second depends on the wavelength

Explanation:

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Wave length is the distance between two successive crest and troughs of a wave.

Frequency is the number of cycles a wave completes in one second.

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explanation:

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radioactive decay occurs in unstable atomic nuclei – that is, ones that don't have enough binding energy to hold

the nucleus together due to an excess of either protons or neutrons.