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The electronic velocity in the fourth Bo...

The electronic velocity in the fourth Bohr's orbit fo hydrogen is `u` . The velocity of the electron in the first orbit would be :

A

`4u`

B

`16 u`

C

` u//4`

D

`u //16`

Text Solution

Verified by Experts

The correct Answer is:
A
`u_(n)=(u_(1))/(n)`.
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P BAHADUR-ATOMIC STRUCTURE-Exercise 3A
  1. Which orbital is represented by the complete wave funcion psi (420) ?

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  2. The number fo bodal planes is greatest for the orbital :

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  3. The electronic velocity in the fourth Bohr's orbit fo hydrogen is u . ...

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  4. Atomic weight of Ne is 20.2 Ne is a mixuture of Ne^(20) and Ne^(22...

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  5. The ammount of enrgy requred to remove the electron from a Li^(2+) ion...

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  6. The ration of spectific charge ( e//m) of a proton to that of an alpha...

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  7. The work function for a metal si 4 eV. To emit a photoelectron of zer...

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  8. In two individual hydrogen atoms electrons move around the nucleus in ...

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  9. If the series limit of wavelngth of the Lymman series for the hydrogen...

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  10. What is the difference in the angular momentum associated with the e...

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  11. Ionisation potential fo hydrogen atomn is 13 . 6 eV. Hydrogen atom in...

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  12. Energy levels A. B, C. of a certain atom correspoinds to increasing v...

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  13. One requiored enrgy R(n) to remove mucleon and an energy Ee to remov...

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  14. Atomic radius is of the order of 10^(-8) cm and nuclear radius is o...

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  15. Suppose 10^(-17) J of light enrgy is needed by the interor of human e...

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  16. A photon of 300 nm ios absorbed by a gas and then re-emits two photon...

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  17. The shortest wavelength in H sopecitrum of lyman series when R(H) = 1...

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  18. The longest lambda for the Lyamn series is …………… (Given RH = 109678 ...

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  19. Number of elrctrons in 1. 8 mL of H2 O are :

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  20. The total number of electrons presnt in 1 mL Mg Given density of ...

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