Question

What transition in He+ ion shall have the same wave number as the first line in Balmar series of H atom?

(1) 7→ 5

(2) 5→ 3

(3) 6→ 4

(4) 4→ 2

Answer 1

Correct option (3) 6→4

Explanation:

First line of Balmer series means 3→ 2