Values of ${\mathrm{IE}}_1$ , ${\mathrm{IE}}_2$ and ${\mathrm{IE}}_3$ of an element are 9.32; 18.21 and 553.83 $\mathrm{eV}$. What informations do these data convey?

The ionisation potentials show how many valence electrons are present in an atom; an exceptionally high value shows that the deleted electron was not a valence electron.${\mathrm{IE}}_1$, ${\mathrm{IE}}_2$, and ${\mathrm{IE}}_3$ of an element are 9.32,18.21 and 153.83 $\mathrm{eV}$. This demonstrates that the element's valence shell has two electrons. The numbers' abrupt jump suggests that the atom's valence electron count is two, as evidenced by the values.