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What is the significance of negative ene...

What is the significance of negative energy of electron in its orbit ?

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The energy of an electron in its atomic orbit is negative due to the nuclear attraction on it. It may come out of an atom to become a zero - energy free electron only if an equal amount of positive energy is supplied to it from outside.
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CHHAYA PUBLICATION-ATOM-Higher Order Thinking Skill (Hots ) Questions
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