Which set of quantum numbers is possible for the last electron of Mg+ ion?
n=3, l=2, m=0, s=+1/2
n=2, l=3, m=0, s=+1/2
n=1, l=0, m=0, s=+1/2
n=3, l=0, m=0, s=+1/2
Last electron of Mg+ is 3s1.