# Do inert gases have the same atomic number?

Apr 30, 2017

$\text{No, different elements have different atomic numbers}$
$\text{by definition............. }$
$\text{Atomic number}$, $Z$, is specified by the by the number of nuclear protons. For $Z = 1$ we have the element $\text{hydrogen}$; $Z = 2$, $\text{helium}$; ...........$Z = 23$, we have the element $\text{vanadium}$............
The $\text{Noble gases}$ have $Z = 2 , 10 , 18 , 36$ etc. And these numbers reflect electronic structure as well as nuclear structure. The moral? ANY two different elements have different values of $Z$.