How many electrons in an atom can have the quantum numbers $n = 3, l = 2, m = +2, s = +1/2$?

In which of the following species,the ratio of $s$-electrons to $p$-electrons is the same?

Consider the following sets of quantum numbers:

$Set$	$(n)-(l)-(m)-(s)$
$(i)$	$(3)-(2)-(1)-(+1/2)$
$(ii)$	$(2)-(2)-(1)-(+1/2)$
$(iii)$	$(4)-(3)-(-2)-(-1/2)$
$(iv)$	$(1)-(0)-(-1)-(-1/2)$
$(v)$	$(3)-(2)-(3)-(+1/2)$

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

Compare the energies of the following sets of quantum numbers for a multielectron system:
$A. n=4, \ell=1$
$B. n=4, \ell=2$
$C. n=3, \ell=1$
$D. n=3, \ell=2$
$E. n=4, \ell=0$
Choose the correct order of increasing energy from the options given below:

Which of the following rules states that an orbital can hold a maximum of two electrons?

Which of the following notations of an orbital is incorrect considering the sign of the wave function?