Cation $\mathrm{X}$ has pseudo inert gas configuration and cation $\mathrm{Y}$ has $\left(18+2e^{-}\right)$ gas configuration (both belongs to same period) then incorrect statement is :

Cation $\mathrm{X}$ needs 8 more electrons to convert into noble gas configuration

Cation $\mathrm{Y}$ has two more electron than the cation  $\mathrm{X}$

Positive charge on cation $\mathrm{Y}$ must be more than cation $\mathrm{X}$

Cation $\mathrm{Y}$ needs 6 more electrons to convert into noble gas configurations