Do any metallic elements ordinarily occurs as gases?
At present there is no metal that at standard temperature and pressure is a gas. However there are a few metallic elements that form liquids. A chip of gallium or cesium melts on your palm, because the melting point of these metals is just below thirty degrees Celsius (86°F). Francium, which has not been prepared as the pure metal so far, would melt at room temperature. Also there is mercury which everyone knows. For any metallic substance to be a gas the temperature must be higher. Mercury boils at the comparatively low temperature of about 300°C Although scientists have proved theoretically that if there existed a heavy analogue of mercury (an element with a very large atomic number an inhabitant of, the imaginary seventh floor – eighth period – of the periodic table, unknown on Earth) its natural state at ordinary conditions would be gaseous.
