Gas at room temperature
It is a gas.
Carbon at room temperature is solid.
It is a solid.
Neptunium is a solid metal at room temperature.
zinc's normal phase is a gas
Argon is a noble gas and exists as a gas at room temperature.
solid...
the phase of matter for platinum is a solid
Calcium is a solid at room temperature. (See the CRC Handbook of Chemistry and Physics for physical properties.)
Well now, that would depend on what kind of matter you're talking about, wouldn't it. At room temperature (and room pressure) . . . -- Oxygen, nitrogen, and helium are in the gas phase. -- Water, mercury, and grain alcohol are in the liquid phase. -- Iron, sugar, and candle wax are in the solid phase.
At room temperature, hydrogen is in the gaseous phase.