If the value of azimuthal quantum number is $3$,the possible values of magnetic quantum number would be

The number of electrons in a nickel $(Ni)$ atom having $m = 0$ is:

An electron having quantum numbers $n = 4, l = 3, m = 0, s = -1/2$ is present in which orbital?

The hydrogen-like species $Li^{2+}$ is in a spherically symmetric state $S_1$ with one radial node. Upon absorbing light,the ion undergoes transition to a state $S_2$. The state $S_2$ has one radial node and its energy is equal to the ground state energy of the hydrogen atom.
$1.$ The state $S_1$ is
$(A)$ $1s$ $(B)$ $2s$ $(C)$ $2p$ $(D)$ $3s$
$2.$ Energy of the state $S_1$ in units of the hydrogen atom ground state energy is
$(A)$ $0.75$ $(B)$ $1.50$ $(C)$ $2.25$ $(D)$ $4.50$
$3.$ The orbital angular momentum quantum number of the state $S_2$ is
$(A)$ $0$ $(B)$ $1$ $(C)$ $2$ $(D)$ $3$
Give the answer for questions $1, 2$ and $3.$

For which of the following orbitals is the value of $(n + l)$ maximum?

Which of the following is the correct electronic configuration?