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An electron of a stationary hydrogen ato...

An electron of a stationary hydrogen aton passes form the fifth enegry level to the ground level. The velocity that the atom acquired as a result of photon emission will be
`(m` is the mass of the electron, `R`, Rydberg constanrt and `h`, Planck's constant)

A

`(24hR)/(25m)`

B

`(25hR)/(25m)`

C

`(24m)/(25hR)`

D

`(25m)/(24hR)`

Text Solution

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The correct Answer is:
A
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An electron of stationary hydrogen atom passes from the fifth energy level to the ground level.The velocity that the atom acquired a result of photon emission will be: "m" is the mass of the atom,"R" is Rydberg constant and "h" is Planck's constant)

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Knowledge Check

  • Choose the most appropriate option. An electron of a stationary hydrogen atom passes from the fifth energy level to the ground level. The velocity that the atom acquired as a result of photon emission will be

    A
    `(24hR)/(25m)`
    B
    `(25hR)/(24m)`
    C
    `(24m)/(25hR)`
    D
    `(25m)/(24hR)`

  • An electron of stationary hydrogen atom jumps from 4th energy level to ground level. The velocity that the photon acquired as a result of electron transition will be (where, h= Planck's constant, R=Rydberg's constant m = mass of photon)

    A
    `(9Rh)/(16m)`
    B
    `(11hR)/(16m)`
    C
    `(13hR)/(16m)`
    D
    `(15hR)/(16m)`

  • An electron in excited hydrogen atom falls from fifth energy level to second energy level. In which of the following regions, the spectral line will be observed and is part of which series of the atomic spectrum?

    A
    Visible, Balmer
    B
    Ultraviolet, Lyman
    C
    Infrared, Paschen
    D
    Infrared, Brackett

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    An electron of stationary hydrogen atom passes from the fifth energy level to the ground level. The velocity that the atom acquires as a result of photon emission is k h R , Find k . (Here, m= Mass of electron, h= Planck's overline(25 m) constant and R= Rydberg constant )

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