The ionisation energy of hydrogen atom in the ground state is x KJ. The energy required for an electron to jump from 2nd orbit to 3rd orbit is

1. 

The ionisation energy of hydrogen atom in the ground state is x KJ. The energy required for an electron to jump from 2nd orbit to 3rd orbit is
[A]. 5x/36
[B]. 5x
[C]. 7.2 x
[D]. x/6

Answer: Option A

Explanation:

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