solid
Platinum's state of matter at room temperature would be a solid.
Platinum at room temperature and pressure is in a solid state.
Solid
If it were a solid at room temperature, then that would be the state of matter. However, hydrogen is NOT solid at room temperature. It is a gas and that would be the state of matter.
Platinum fluorides are: PtF2, PtF4 and PtF6.PtF6 is a solid at room temperature but volatile.
solid at room temperature
Be is solid at Room temperature
the state of matter of chromium is a solid
Oxygen is a gas at room temperature.
Sulfur is a solid at room temperature.
Titanium metal would be in the solid state at room temperature.
Rubber is typically in a solid state at room temperature.