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Which electronic transition in a hydroge...

Which electronic transition in a hydrogen atom releases the greatest amount of energy?

A

n = 1 to n = 2

B

n = 2 to n = 4

C

n = 3 to n = 6

D

`n = oo` to n = 1

Text Solution

Verified by Experts

The correct Answer is:
A
`Delta E = 1312 [(1)/(n_(1)^(2))-(1)/(n_(2)^(2))] kJ mol^(-1)` (For hydrogen atom)
(A) `n_(2) = 1, n_(2) = 2`
`Delta E = (1312 xx 3)/(4) kJ mol^(-1)`
(B) `n_(1) = 2, n_(2) = 4`
`Delta E = (1312 xx 3)/(16) kJ mol^(-1)`
(C) `n_(1) = 3, n_(2) = 6`
`Delta E = (1312)/(16) kJ mol^(-1)`
(D) Here energy will be evolved.
THus out of A, B and C, choice A is correct (greatest amount of energy).
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