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In a malti-electrons atom which of the ...

In a malti-electrons atom which of the following orbitals deseribed by the three quantum number will have the same energy in the absence of megnetic and electric field ?
I.`n = 1, l = 0, m = 0`
II. `n = 2, l = 0, m = 0`
III.`n = 2, l = 1, m = 1`
IVgt`n = 3, l = 2, m = 1`
V`n = 3, l = 2, m = 0`

A

`(i)`and`(ii)`

B

`(ii)`and`(iii)`

C

`(iii)`and`(iv)`

D

`(iv)`and `(v)`

Text Solution

Verified by Experts

The correct Answer is:
D
Only degenerate orbitals such as `np, nd, nd`, and `nf` have the same enegry in the absence of magnetic and electric fields. (iv)and (v) are `3d`orbitals having same `n` and same `l`, that is, they are degenerate orbitals.
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