The ratio of the wavelengths for the transition from n =2 to n = 1 in Li++, He+ and H is
A. 1 : 2 : 3
B. 1 : 4 : 9
C. 3 : 2 : 1
D. 4 : 9 : 36
Answer:D
The ratio of the wavelengths for the transition from n =2 to n = 1 in Li++, He+ and H is
A. 1 : 2 : 3 B. 1 : 4 : 9 C. 3 : 2 : 1 D. 4 : 9 : 36