A photon is emitted by an atom when one of the atom\'selectrons a) leaves the at

Question

A photon is emitted by an atom when one of the atom'selectrons a) leaves the atom b) collides with another of its electrons c) shifts to a lower energy level d) shifts to a higher energy level The text book is confusing me, and I really need some help.Thank you. A photon is emitted by an atom when one of the atom'selectrons a) leaves the atom b) collides with another of its electrons c) shifts to a lower energy level d) shifts to a higher energy level The text book is confusing me, and I really need some help.Thank you.

Explanation / Answer

c) When an electron shifts to a lower energy level, a photonis emitted. The energy difference between the two levels determines thefrequency of the photon, which is given by; Ef-Ei = hf where; Ef= Energy of final energy level Ei= Energy of initial energy level h = planks constant f=frequency Note: When electron shifts from lower to higher energy level,it must absorb energy.

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