So I just learned: $$K_{max} = hf - \phi$$($\phi$ for ionization energy)

I wonder what will happen if $K_max$ is zero. Will it be attracted back to the ionized atom it has come from since it doesn't have any energy to move away from it?

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    $\begingroup$ possible duplicate of Ejected Electrons with 0 KE? $\endgroup$ Commented Aug 7, 2015 at 14:02
  • $\begingroup$ @JohnRennie, so I was correct in saying that if the electron has too little energy, or no energy at all, it will get pulled back into the atom? But how much is too little? $\endgroup$ Commented Aug 7, 2015 at 14:21


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