Answered

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Assuming an electron is a hydrogen atom can undergo any of the transitions below, thus changing its energy. Which transition is associated with the absorption of light of the longest wavelength?
n = 2 to n = 3
n = 1 to n = 3
n = 3 to n = 5
n = 5 to n = 3
n = 3 to n = 1

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Answer:

n = 3 to n = 5

Explanation:

According to the Bohr's model of the atom, electrons in an atom absorb energy to move from a lower to higher energy level.

We must note that as we progress away from the nucleus, the energy levels of electrons become closer together. The energy difference between successive levels decreases and the wavelength of light associated with such transitions become longer.

Hence,the absorption of light of the longest wavelength corresponds to n = 3 to n = 5

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