Which pair of atoms or ions will have the same electronic configuration?

Which of the following orbitals is represented by $n=3$ and $l=2$?

For which of the following sets of four quantum numbers,an electron will have the highest energy?
$n$ $l$ $m$ $s$

The total number of orbitals in an energy level designated by principal quantum number $n$ is equal to

The quantum numbers of six electrons are given below. Arrange them in order of increasing energies. If any of these combination$(s)$ has/have the same energy,list them:
$(1).$ $n=4, l=2, m_l=-2, m_s=-1/2$
$(2).$ $n=3, l=2, m_l=1, m_s=+1/2$
$(3).$ $n=4, l=1, m_l=0, m_s=+1/2$
$(4).$ $n=3, l=2, m_l=-2, m_s=-1/2$
$(5).$ $n=3, l=1, m_l=-1, m_s=+1/2$
$(6).$ $n=4, l=1, m_l=0, m_s=+1/2$

The four quantum numbers of the valence electron of potassium are