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If the binding energy of the electron in...

If the binding energy of the electron in a hydrogen atom is `13.6 eV`, the energy required to remove the electron from the first excited state of `Li^(++)` is

A

`+122.4eV`

B

`-30.6eV`

C

`-13.6eV`

D

`+30.6eV`

Text Solution

Verified by Experts

The correct Answer is:
B
`E_(H)=-13.6eV`
For n = 2 of `Li^(++)`
`E_(n)(Li^(++))=(E_(H)Z^(2))/(n^(2))=(-13.6xx(3)^(2))/((2)^(2))=-30.6eV`
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MTG GUIDE-ATOMS AND NUCLEI-NEET CAFÉ (TOPICWISE PRACTICE QUESTIONS)(ENERGY LEVELS AND HYDROGEN SPECTRUM)
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  8. The frequency of the H(beta)-line of the Balmer series for hydrogen is

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  9. the wavelength of radiation emitted is lambda0 when an electron jumps....

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  10. The total energy of a hydrogen atom in its ground state is -13.6 eV. I...

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  11. In an excited state of hydrogen like atom an electron has total energy...

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  12. The electron in a hydrogen atom makes a transition from n=n(1) to n=n...

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  13. Which energy state of doubly ionized lithium Li^(++) has the same ener...

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  14. when an electron jumps from the fourth orbit to the second orbit, one ...

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  15. The ratio of minimum to maximum wavelength in Balmer series is

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  17. Hydrogen atom from excited state comes to the ground state by emitting...

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  18. According to Bolir's theory, the energy of an electron in hydrogen ato...

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  19. An electron is moving in an orbit of a hydrogen atom from which there ...

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  20. Which of the following transition in He^(+) ion will give rise to a sp...

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