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Hydrogen atom is excited from ground sta...

Hydrogen atom is excited from ground state to another state with principle quantum number equal to 4. Then the number of spectral lines in the emission spectra will be ......

A

2

B

3

C

5

D

6

Text Solution

Verified by Experts

The correct Answer is:
D
No. of possible transitions of electron
`=(n(n-1))/(2)`
`=(4(4-1))/(2)`
`=(4xx3)/(2)=6`
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Knowledge Check

  • Hydrogen atoms are excited from ground state to state of principle quantum number 4. Then the number of spectral lines observed will be.....

    A
    5
    B
    6
    C
    3
    D
    2

  • Number of spectral line of hydrogen atom is

    A
    6
    B
    15
    C
    8
    D
    `oo`

  • Hydrogen atom in ground state is excited by a monochromatic radiation of wavelength lambda = 975 Å then number of spectral lines in resulting spectrum emitted will be ......

    A
    3
    B
    2
    C
    6
    D
    10

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