Atomic StructureHard
Question
Which transition in Li2+ would have the same wavelength as the 2 → 4 transition in He+ ion ?
Options
A.4 → 2
B.2 → 4
C.3 → 6
D.6 → 2
Solution
(He+)2 → 4 = (Li2+)n4 → n3
∴
or 
∴ n4 = 3 and n3 = 6.
∴ Transition in Li2+ ion = 3 → 6
∴
or ∴ n4 = 3 and n3 = 6.
∴ Transition in Li2+ ion = 3 → 6
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