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If the potential energy of an electron in the hydrogen atom is , then, in which of the following excitation level is the electron present?
(a)
(b)
(c)
(d)

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Important Questions on Structure of Atom
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Match the following
a | Energy of ground state of | i | |
b | Potential energy of I orbit of -atom | ii | |
c | Kinetic energy of II excited state of | iii | |
d | lonisation potential of | iv |
