Home
Class 11
CHEMISTRY
The frequency of radiantion emitted whe...

The frequency of radiantion emitted when the electron falls from n = 4 to n = 1 in a hydrogen atom will be (Given ionisation energy of `H=2.18xx10^(-18)` j `"atom"^(-1)` and `h=6.625xx10^(-34) Js`)

A

`2.00 xx 10^(15)s^(-1)`

B

`1.54 xx 10^(15) s^(-1)`

C

`1.03 xx 10^(15) s^(-1)`

D

`3.08 xx 10^(15) s^(-1)`

Text Solution

Verified by Experts

The correct Answer is:
D
`I.E_(1) (H) = 2.18 xx 10^(-18) J`
`:. E_(1) = -2.18 xx 10^(-18) J`
`:. E_(4) = (-2.18 xx 10^(-18)J)/(4^(2))J`
`Delta E = 2.18 xx 10^(-18)(1-(1)/(16))J`
`= (2.18 xx 10^(-18) xx 15)/(16)J`
`v = (Delta E)/(h) = (2.18 xx 10^(-18) xx 15J)/(16 xx 6.25 xx 10^(-34)Js)`
`= 3.08 xx 10^(15) s^(-1)`
Promotional Banner

Similar Questions

Explore conceptually related problems

The frequency of radiation emiited when the electron falls n =4 to n=1 in a hydrogen atom will be ( given ionization energy of H= 2.18 xx 10 ^(-18)J "atom "^(-1) and h= 6.625 xx 10 ^(-34)Js)

The amount of energy emitted if electron falls from n = 3 to n = 2 , in hydrogen atom is

The frequency of radiations emitted when electron falls from n = 4 to n = 1 in H-"atom" would be (Given E_1 for H = 2.18 xx 10^-18 J "atom"^-1 and h = 6.625 xx 10^-34 Js .)

Calculate the energy and frequency of the radiation emitted when an electron jumps from n=3 to n=2 in a hydrogen atom.

In excited H atom when electron drop from n = 4,5,6 to n = 1 , there is emission of

In excited H atom, when electron drop from n = 4,5,6 to n = 1 , there is emission of

In excited H atom, when electron drop from n = 4, 5, 6 to n = 1, there is emission of:

The wavelength of the radiation emitted , when in a hydrogen atom electron falls from infinity to stationary state 1 , would be : (Rydberg constant = 1.097 xx 10^(7) m^(-1) )

Calculate the wavelength and energy for radiation emitted for the electron transition from infinite (oo) to stationary state of the hydrogen atom R = 1.0967 xx 10^(7) m^(-1), h = 6.6256 xx 10^(-34) J s and c = 2.979 xx 10^(8) m s^(-1)

Calculate the wavelength of radiation emitted producing a line in the Lyman series ,when as electron falls from fourth stationary in hydrogen atom (R_(H) = 1.1 xx 10^(7)m^(-1)