Orbital filling?

Question

Which of these quantum numbers is wrong?
I thought i knew this but now im confused.
(2, 0, 0, -1/2)
(1, 1, 0 +1/2)
(2, 1, -1, -1/2)
(4, 3, +2, -1/2)
and why?

Answer 1

It's (1, 1, 0, +1/2). That's not a possible configuration of quantum numbers, because the second number can only be as large as one less than the first number. If the principal quantum number is 1, then the azimuthal quantum number can only be 0.