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Consider the spectral line resulting fro...

Consider the spectral line resulting from the transition n = 2 to n = 1 in the atoms and ions given below. The shortest wave length is produced by

A

hydrogen atom

B

deuterium atom

C

singlyionized helium

D

doublyionized lithium

Text Solution

Verified by Experts

The correct Answer is:
D
`1/lamda=RZ^2[1/n_2^2-1/n_1^2] , " "1/lamdaprop Z^2` when `lamda` is shorter, then Z is bigger `:.` Z is highest for lithium.
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