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One energy difference between the states...

One energy difference between the states `n = 2` and `n= 3` is `"E eV"`, in hydrogen atom. The ionisation potential of `H` atom is -

A

`3.2 E`

B

`7.2` E

C

`5.6 E`

D

`13.2 E`

Text Solution

Verified by Experts

The correct Answer is:
B
`(E_1)/(3^2) - (E_1)/(2^2) = E rArr (-5 E_1)/(36) = E`
`E_1 = -7.2 E, I.E = +E_1 " "=+7.2 E`
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