Hydrogen fluoride (HF) is a gas at room temperature, but it can exist as a liquid under certain conditions. At standard atmospheric pressure, hydrogen fluoride has a boiling point of about 19.5 degrees Celsius (67.1 degrees Fahrenheit). This means that at typical room temperatures (around 20-25 degrees Celsius or 68-77 degrees Fahrenheit), hydrogen fluoride is indeed in gaseous form.
However, when subjected to higher pressures or lower temperatures, hydrogen fluoride can condense into a liquid state. It is also commonly available in a liquid form when stored in pressurized containers. In those containers, the vapor above the liquid can exude HF gas.
In summary, under normal atmospheric pressure and typical room temperature, hydrogen fluoride will be a gas, but it can easily transition to a liquid phase under the right conditions.