1.

The first excitation potential of a hypothetical hydrogen- like atom is `15 V`. Find the third excitation potential of the atom.A. `V` electron voltB. `(3 V)/(4)` electron voltC. `(4 V)/(3)` electron voltD. cannot be calculate by given information

Answer» Correct Answer - C
first excitation energy is
`R h c ((1)/(1^(2)) - (1)/(2^(2))) = R h c (3)/(4)`
` (3)/(4) R h c = V eV`
`:. R h c = (4 V)/(3) eV`


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