If you mean group 7A, the element that is a liquid at room temperature is bromine.
Bromine
Bromine is the only nonmetal element that is a liquid at room temperature.
Mercury is the metal that is liquid at room temperature
No element in Group II is a liquid at room temperature. The only elements that are liquid at room temperature are bromine, which is in Group VII, and mercury, which is a transition metal and Lord only knows how your book defines those, but it's almost certainly NOT Group II. (It could, conceivably, be Group IIB, though the whole thing of group numbers is one of the stupider concepts in chemistry, especially since there are at least three mutually incompatible ways of defining them.)
Liquid: mercury. Gas: neon.
Bromine
Bromine is a halogen element that is in liquid form at room temperature.
Mercury is the only metal to be liquid at room temperature.
Mercury is a metal element which is liquid at room temperature
Bromine is the only nonmetal element that is a liquid at room temperature.
Mercury is the metal that is liquid at room temperature
No element in Group II is a liquid at room temperature. The only elements that are liquid at room temperature are bromine, which is in Group VII, and mercury, which is a transition metal and Lord only knows how your book defines those, but it's almost certainly NOT Group II. (It could, conceivably, be Group IIB, though the whole thing of group numbers is one of the stupider concepts in chemistry, especially since there are at least three mutually incompatible ways of defining them.)
Liquid: mercury. Gas: neon.
Mercury is a metal element which is liquid at room temperature
This element is mercury.
Mercury or HG is an element that is liquid at room temperature and is not a diatomic element.
At room temperature, the element Mercury is a liquid.