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The hydrogen -like species Li^(2+) is in...

The hydrogen -like species `Li^(2+)` is in a spherically sysmmetric state `S_(1)` with one node ,Upon ansorbing light , the ion undergoes transition to a state `S_(2)` The state `s_(2)` has one radial node and its energy is equal is to the ground state energy of the hydrogen atom
The sate `S_(1)` is

A

1s

B

2s

C

2p

D

3s

Text Solution

Verified by Experts

The correct Answer is:
B
The number of radial nodes is `n - l - 1` For `S_(1)` radial nodes `= 1` and spectrical (given) This means s orbitals
So `l = 0`
`n - l- 1= 1`
`n - 0 - 1 = 0`
`n = 2` this means `S = 2s`
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Knowledge Check

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