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Q.

An electron is excited to fourth energy level in an atom. It will

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a

remain in the fourth energy level permanently

b

come back to original state either in one or more jumps

c

comeback to ground state in one jump

d

rise to higher energy levels

answer is B.

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Detailed Solution

Life of excited electron is approximately 10−13sec.

The electron in the excited state is highly unstable, So It drops to the original level in one or more number of jumps.

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