What is the maximum number of electrons in an atom that have the set of quantum numbers n= 2 and l= 1?
A)10
B)2
C)14
D)18
E)6

Question

Quizplus · Accepted Answer

The maximum number of electrons in an atom with a given set of quantum numbers n=2 and l=1 is determined by the magnetic quantum number (m_l) and the spin quantum number (m_s). For l=1, m_l can be -1, 0, or +1, giving three possible orientations. Each orientation can have two electrons with opposite spins (m_s = +1/2 or -1/2), leading to a total of 3*2 = 6 electrons.

What Is the Maximum Number of Electrons in an Atom