Question

The number of spectral lines orbitals in Bohr spectrum of hydrogen atom when an electron is excited from ground level is 5th orbit is
A. 10
B. 5
C. 8
D. 15

Answer 1

Correct Answer - A
Number of spectram lines the ground state
`= (n(n - 1))/(2) = ( 5 xx 4)/(2) = 10`