Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
$1.$ The state $S_1$ is
$(A)$ $1 \mathrm{~s}$ $(B)$ $2 \mathrm{~s}$ $(C)$ $2 \mathrm{p}$ $(D)$ $3 \mathrm{~s}$
$2.$ 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 question $1,2$ and $3.$
