1.) The amount of energy in electromagnetic radiation is related to the frequenc

Question

1.) The amount of energy in electromagnetic radiation is related to the frequency and wavelength of the radiation. Low energy radiations like radio waves have a _____(Long or Short) wavelength and a _____(High or Low) frequency.

2.) What is the term for the physical constant that is the quantitative measure of the amount of UV light absorbed by a compound?

3.) When an organic molecule is irradiated with ultraviolet radiation, the energy absorbed by the molecules causes what type of change in the molecule (specifically explain the specific types of excitations the molecule experiences)? Explain your answer.

4.) Briefly explain how molecules absorb UV/visible light. Be specific and cite the types of transitions that occur.

Explanation / Answer

1.) The amount of energy in electromagnetic radiation is related to the frequency and wavelength of the radiation. Low energy radiations like radio waves have a Long wavelength and a Low frequency.
E = h*c/wavelength
E and wavelength are inversely related
so, lower energy means higher wavelength

E=h*f
E and f are directly proportional
so lower energy means lower frequency

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