Why is energy required to remove an electron from an atom?

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asked Jan 7, 2019 106k views

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Babcool · Answer 1 · 2019-01-14T10:20:59+0000

Electrons in an atom are held there by the force of attraction exerted by the positive charge of the nucleus on the negative charge of the electron. Energy is required to remove an electron from atom to overcome this attractive force.

Why is energy required to remove an electron from an atom?

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