Question
Which is easier to remove: orbital electron from an atom or a nucleon from a nucleus?
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Answer
It is easier to remove an orbital electron from an atom. The reason is the binding energy of orbital electron is a few electron-volts while that of nucleon in a nucleus is quite large (nearly 8MeV). This means that the removal of an orbital electron requires few electron volt energy while the removal of a nucleon from a nucleus requires nearly 8MeV energy.
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