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A doubly ionised Li atom is excited from...

A doubly ionised Li atom is excited from its ground state(n = 1) to n = 3 state. The wavelengths of the spectral lines are given by `lamda_(32), lamda_(31)` and `lamda_(21)`. The ratio `l_(32)//lamda_(31)` and `l_(21)//l_(31)` are, respectively

A

8.1,0.67

B

8.1,1.2

C

6.4,1.2

D

6.4,0.67

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