Which of the following sets of quantum numbers is not allowed?

Which of the following sets of quantum numbers is not allowed?

Step 1: Understand what quantum numbers are. They describe the properties of electrons in an atom.
Step 2: Identify the four quantum numbers: n (principal), l (azimuthal), m_l (magnetic), and m_s (spin).
Step 3: Know the rules for quantum numbers: n can be any positive integer, l can be from 0 to n-1, and m_l can range from -l to +l.
Step 4: Focus on the case where l = 0. If l = 0, then m_l can only be 0.
Step 5: Check the given set of quantum numbers: n = 1, l = 0, m_l = 1.
Step 6: Since l = 0, m_l cannot be 1. It must be 0 instead.
Step 7: Conclude that the set of quantum numbers n = 1, l = 0, m_l = 1 is not allowed.

No concepts available.