Using $s$,$p$,$d$,and $f$ notations,describe the orbital with the following quantum numbers:
$(a)$ $n=1$,$l=0$
$(b)$ $n=3$,$l=1$
$(c)$ $n=4$,$l=2$
$(d)$ $n=4$,$l=3$

The orbital notation is given by $nl$,where $n$ is the principal quantum number and $l$ is the azimuthal quantum number ($l=0$ is $s$,$l=1$ is $p$,$l=2$ is $d$,$l=3$ is $f$).
$(a)$ For $n=1$,$l=0$: The orbital is $1s$.
$(b)$ For $n=3$,$l=1$: The orbital is $3p$.
$(c)$ For $n=4$,$l=2$: The orbital is $4d$.
$(d)$ For $n=4$,$l=3$: The orbital is $4f$.