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The set of principal (n), azimuthal (l) ...

The set of principal (n), azimuthal (l) and magnetic `(m_(l))` quantum number that is not allowed for the electron in H-atom is

A

n = 3, l = 1, `m_(l) = -1`

B

n = 3, l = 0, `m_(l) = 0`

C

n = 2, l = 1, `m_(l)= 0`

D

n = 2, l = 2, `m_(l) = -1`

Text Solution

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The correct Answer is:
D
n is always greater than l
and m = - l……….0 ………..+l
If n = 2, then l = 0, 1
and `m_(l) = 0, { -1, 0, + 1}`
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