Which condition is not satisfied by an ideal solution?

For an ideal solution,
$\begin{array}{r}{\mathrm{\Delta S}}_{\text{mix }}>0\\ {\mathrm{\Delta V}}_{\text{mix }}=0\\ {\mathrm{\Delta H}}_{\text{mix }}=0\end{array}$
Raoult’s Law is obeyed for entire concentration range.
Ideal solution:
Attractive forces between individual component before mixing and after mixing remain same
Attractive forces
A..........A = A..........B
B..........B = A...........B
(1)(2) Since before and after mixing attarctive forces are same, $\mathrm{\Delta }{H}_{\text{mix }}=\mathrm{\Delta }{V}_{\text{mix }}= 0$
(3) For ideal solutions:
(i) partial vapour pressure of each component is equal to its vapor pressure after mixing.
${\mathrm{\Delta P}}_{\text{mix }}=0$
(ii) vapour pressure of solution is equal to Raoult’s vapour pressure.
For an ideal solution,
${\mathrm{\Delta S}}_{\text{mix }}>0\text{, while }{\mathrm{\Delta H}}_{\text{mix }},{\mathrm{\Delta V}}_{\text{mix }}\text{ and }\mathrm{\Delta P}=0$
since different size particles are present in ideal solution
${\mathrm{\Delta S}}_{\text{mix }}>0$