The number of spectral lines obtained in Bohr spectrum of hydrogen atom when an electron is excited from 2 textnd orbit to 5 textth orbit, is

Question

The number of spectral lines obtained in Bohr spectrum of hydrogen atom when an electron is excited from 2 textnd orbit to 5 textth orbit, is (A) 3 (B) 6 (C) 10 (D) 5

Tardigrade Admin · Accepted Answer

Number of spectral lines from n1 to n2 =((n2-n1+1)(n2-n1)/2) =((5-2+1)(5-2)/2)=6

Q. The number of spectral lines obtained in Bohr spectrum of hydrogen atom when an electron is excited from $2^{nd}$ orbit to $5^{th}$ orbit, is

3

6

10

5

Number of spectral lines from $n_{1}$ to $n_{2}$
$= \frac{( n _{2} - n _{1} + 1 ) ( n _{2} - n _{1} )}{2}$
$= \frac{( 5 - 2 + 1 ) ( 5 - 2 )}{2} = 6$

Q. The number of spectral lines obtained in Bohr spectrum of hydrogen atom when an electron is excited from 2nd orbit to 5th orbit, is

3

6

10

5

Number of spectral lines from n1​ to n2​ =2(n2​−n1​+1)(n2​−n1​)​ =2(5−2+1)(5−2)​=6

Q. The number of spectral lines obtained in Bohr spectrum of hydrogen atom when an electron is excited from $2^{nd}$ orbit to $5^{th}$ orbit, is

Number of spectral lines from $n_{1}$ to $n_{2}$
$= \frac{( n _{2} - n _{1} + 1 ) ( n _{2} - n _{1} )}{2}$
$= \frac{( 5 - 2 + 1 ) ( 5 - 2 )}{2} = 6$