Hydrogen atom is excited from ground state to another state with principal quantum number equal to 4

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12.Atoms

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

A

$3$

B

$6$

C

$5$

D

$2$

Solution

The possible number of the spectral lines is given

$=\,\frac {n(n-1)}{2}=\,\frac {4(4-1)}{2}\,=\,6$

Standard 12

Physics

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