The number of electrons which can have the quantum numbers n=3, l=anything, ml=1 and ms=anything is:
Open in App
Solution
For n=3⇒ there are three possible l values; 0, 1 and 2. Given ml=1. l can take the values 1 and 2. ms can be +12 and −12. Thus there can be only 4 electrons having the given quantum numbers.