$A$ certain orbital has $n = 4$ and $m_{L} = -3$. The number of radial nodes in this orbital is .......... (Round off to the Nearest Integer).

Explain the energy order of orbitals in multielectron atoms.

$(i)$ 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 $3f$.

The number of angular and radial nodes of $4d$ orbital respectively are

The atomic weight of an element is double its atomic number. If there are four electrons in the $2p$ orbital,the element is:

The maximum number of electrons in a $P$ orbital with $n = 6$ and $m = 0$ is ......