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

One energy difference between the states `n = 2` and `n= 3` is `"E eV"`, in hydrogen atom. The ionisation potential of `H` atom is -
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One energy difference between the states `n = 2` and `n= 3` is `"E eV"`, in hydrogen atom. The ionisation potential ... B. 5.6 E C. 7.2 E D. 13.2 E
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