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Arrange the wavelengths (a) of the follo...

Arrange the wavelengths (a) of the following emission lines of H-atom in an increasing order.
(1) `n = 3 overset(lambda_(1))to n = 1` (2) `n = 5 overset(lambda_(2))to n = 3`
(3) ` n = 12 overset(lambda_(3))to n = 10` (4) `n = 22 overset(lambda_(4)) to n = 20`

A

`lambda_(4) lt lambda_(3) lt lambda_(2) lt lambda_(1)`

B

`lambda_(1) lt lambda_(2) lt lambda_(3) lt lambda_(4)`

C

`lambda_(1) lt lambda_(2) lt lambda_(4) lt lambda _(3)`

D

`lambda_(1) lt lambda_(3) lt lambda_(3) lt lambda_(4) lambda_(2)`

Text Solution

Verified by Experts

The correct Answer is:
B
When electron comes in a lower from higher orbit energy is released, no matter from which higher orbit the electron is coming. Hence, `lambda_(1) , lt lambda_(2) lt lambda_(3)lt lambda_(3) lt lambda_(4)`.
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