# Give value of n and l for 2s orbital ?

Feb 9, 2018

$n = 2$ and $l = 0$

#### Explanation:

A quick revision,

$n$ is the principle quantum number and takes values =1, 2, 3, ...

$l$ is the azimuthal quantum number and takes the values = 0 to $n - 1$

so for;
$n = 1$, $l = 0$
$n = 2$; $l = 0 , 1$
$n = 3$; $l = 0 , 1 , 2$... and so on.
(here, $0$ stands for $s$-orbital, $1$ for $p$-orbital, $2$ is $d$-orbital and so on)

So, the value of $n$ and $l$ for $2 s$ orbital would be
$\textcolor{b l u e}{n = 2}$, (the $2$ from "$2 s$") and
$\textcolor{b l u e}{l = 0}$ (as $0$ represents s-orbital)