Here's why:

* Metalloids are elements that exhibit properties of both metals and nonmetals. They tend to be semi-conductors and have varying reactivity.

* Gases at room temperature are elements that exist in a gaseous state at standard atmospheric pressure and a temperature of 25°C (77°F).

All metalloids exist as solids at room temperature:

* Boron (B)

* Silicon (Si)

* Germanium (Ge)

* Arsenic (As)

* Antimony (Sb)

* Tellurium (Te)

* Polonium (Po)

While some metalloids can be found in gaseous forms under specific conditions (like high temperatures), none are naturally gases at standard room temperature.