1.

If the hydrogen atom is initially at n = 2 state, how much work have to do to move the electron and proton far into the hydrogen atom?

Answer»

`13.6xx1.6xx10^(-19)J`
`3.4xx1.6xx10^(-19)J`
`1.51xx1.6xx10^(-19)J`
0

Solution :If there is a LARGE distance between the electrons and protons, then the energy between them is zero. The work done for carrying electrons and protons too FAR.
`W=E_(f)=E_(i)`
`=[-(13.6)/(oo^(2))-(-(13.6)/(n^(2)))]eV`
`=(13.6)/(2^(2))eV=(13.6)/(4)xx1.6xx10^(-19)J`
`:.W=3.4xx1.6xx10^(-19)J`


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