Quantum Numbers: Why (3,-2,0,1/2) is Invalid

[Feodalherren]

Homework Statement

Why isn't (3, -2 , 0 , 1/2) a valid quantum number?

Homework Equations

The Attempt at a Solution

n=3

so l = -2 is valid.

-l≤Ml≤l

2≤Ml≤-2
nonsensical statement. I don't know what to do...

 

[Saitama]

Homework Statement

Why isn't (3, -2 , 0 , 1/2) a valid quantum number?

Homework Equations

The Attempt at a Solution

n=3

so l = -2 is valid.

-l≤Ml≤l

2≤Ml≤-2
nonsensical statement. I don't know what to do...

No, l=-2 is not valid. l is always non-negative.

 

[Feodalherren]

Ah so it's that simple... Thanks.

 

[Christian0412]

I agree.
n = 3
l = 0, 1, 2
ml = -2, -1, 0, 1, 2
ms = -1/2 or 1/2

l cannot be negative, but ml can be.