Question

An electron jumps from 5th excited state to first excited state. Calculate total spectral lines which not seen in visible region.

Answer 1

Answer:

Explanation:

general formula to calculate total spectral lines

N= (n2-n1)(n2-n1+1)/2

n2=5 because jumped from fifth state

n1=1 ,jumped to first state

N= (5-1)(5-1+1)/2= 4*5/2= 10

hope it helps you

Answer 2

Answer:

10

Explanation:

N=(n2-n1)*(n2-1+1)/2

N=(5-1)*(5-1+1)/2

N=4×5/2

N=10

therefore there will be 10 specrtral lines in the invisible region