# Do photoelectric effect suggest that the emission of energy by an atom be quantized

1. Homework Statement

Do photoelectric effect suggest that the emission of energy by an atom be quantized

2. Homework Equations

3. The Attempt at a Solution

I think it is true as photoelectric effect told us that atom emitt energy in terms of electron.

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rock.freak667
Homework Helper
Not sure since the photoelectric effect occurs when EM radiation is incident on a metal only.

But if you consider the energy levels in atoms, an electron will only be sent to a higher energy level if it absorbs EM energy equal to the difference in the n=0 level to another.

$E_1-E_2=hf$

So, if EM radiation of a known frequency is incident on an atom and hf is equal to that difference, then the electron will move to a higher energy state.

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