Quantum numbers are always in the order n,l,ml, ms. Which of the following quantum numbers is likely NOT to occur and why?
A. 0,2,3,4 because the principal quantum number belongs to natural numbers
B. 2,1,-2,+1/2 because the spin quantum number ranges from -l to l
C. 3,2,1,-1/2/ beacuse the magnetic quantum number is always negative
D.4,3,-4,+-1/2 because the azimuthal quantum number is always a fraction.