Question

4.)Total number of spectral lines in UV region, during
transition from 5th excited state to 1st excited state
(1) 10
(2) 3
(3) 4
(4) Zero​

Answer 1

Answer:

{4) zero_____________

Answer 2

Answer:

ans = 0 ( option 4 )

Explanation:

No . of spectral lines = summation of ( n2-n1 )

n2=6

n1=2

therefore no. = summation ( 6-2 )

                      = 4+3+2+1

now we start assigning series to the numbers . we start from the series to which n1 corresponds , which in this case is balmer .

So , in 4+3+2+1    ,     4 : balmer

                                  3 : paschen

                                  2 : bracket

                                  1 : pfund

if n1 was 1 , we would have started from lymann ....

therefore in this question , since there is no line corresponding to UV series , ans =0