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Calculate the energy required to excite ...

Calculate the energy required to excite an electron in hydrogen atom from the ground state to the next higher state, if the ionsation energy for the hydrogen atom is `13.6 eV`.

A

2

B

3

C

4

D

5

Text Solution

Verified by Experts

The correct Answer is:
C
Energy required to excite the electron from n=2 to n=3 can be calculated as :
`E_3-E_2=-(13.6)Z^2(1/3^2-1/2^2)`
`rArr 30.22=(13.6xx5Z^2)/36`
`rArr Z approx 4`.
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