Question

Structure of Atom
14. Number of spectral line in Balmer series when an
electron return from 7th orbit to 1st orbit of hydrogen
atom are
(1) 5
(3) 21
(4) 8
(2) 6​

Answer 1

Answer:

2

Explanation:

It comes after..the ..

Answer 2

No.of lines = n2 - n1 (n2 - n1 + 1)/2

= 7 - 1 (7-1+1)/2

= 6 (7)/ 2

= 21

So the answer is 21 //