Any $p-$ orbital can accommodate up to:

For a one-electron atom,the set of allowed quantum numbers is

The number of electrons that can be accommodated in $d_{z^2}$ orbital is

Identify the neutral atoms having the outermost electronic configurations as $2p^4$,$3s^2$,and $2p^3$ respectively.

Which of the following species must have the maximum number of electrons in the $d_{xy}$ orbital?

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:
$(1).$ $n=4, l=2, m_l=-2, m_s=-1/2$
$(2).$ $n=3, l=2, m_l=1, m_s=+1/2$
$(3).$ $n=4, l=1, m_l=0, m_s=+1/2$
$(4).$ $n=3, l=2, m_l=-2, m_s=-1/2$
$(5).$ $n=3, l=1, m_l=-1, m_s=+1/2$
$(6).$ $n=4, l=1, m_l=0, m_s=+1/2$