For a given azimuthal quantum number $(l)$,the total number of magnetic quantum numbers $(m)$ is given by:

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

Identify the orbital having the lowest energy from the following.

Electronic configuration of $Cu$ $(Z = 29)$ is

What is a shell in the context of atomic structure?

$(i)$ An atomic orbital has $n=3$. What are the possible values of $l$ and $m_l$?
$(ii)$ List the quantum numbers ($m_l$ and $l$) of electrons for $3d$ orbital.
$(iii)$ Which of the following orbitals are possible? $1p$,$2s$,$2p$,and $3f$.