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.)
If you mean group 7A, the element that is a liquid at room temperature is bromine.
Bromine
Bromine is the only liquid element in Group 7 (also known as Group 17) of the periodic table. It is a reddish-brown volatile liquid at room temperature, and it is the only nonmetallic element that is liquid under normal conditions.
Bromine, group 17; Mercury, group 12. Both are liquids at STP
Liquid halides are compounds that contain a halogen element, such as chlorine or bromine, combined with another element or group and exist in a liquid state at room temperature. These substances are often used in industrial processes, particularly as solvents or catalysts. Examples include liquid hydrogen chloride or liquid bromine.
If you mean group 7A, the element that is a liquid at room temperature is bromine.
Bromine
Bromine is a halogen element that is in liquid form at room temperature.
Bromine is the only liquid element in Group 7 (also known as Group 17) of the periodic table. It is a reddish-brown volatile liquid at room temperature, and it is the only nonmetallic element that is liquid under normal conditions.
Bromine, group 17; Mercury, group 12. Both are liquids at STP
Liquid halides are compounds that contain a halogen element, such as chlorine or bromine, combined with another element or group and exist in a liquid state at room temperature. These substances are often used in industrial processes, particularly as solvents or catalysts. Examples include liquid hydrogen chloride or liquid bromine.
Bromine is a halogen element, belonging to Group 17 of the periodic table. It is a reddish-brown liquid at room temperature and is highly reactive.
The ONLY liquid elements (at STP) areMercury, Hg, in group 12Bromine, Br, in group 17Notations like ia, iia, ib or iib are not commonly in use, maybe in older books or periodic tables.
Zn=Zinc, which is a solid; Hg=Mercury, which is a liquid. They are both in group 12.
the only liquid halide is bromine
The density of chlorine is 0.00321g/cm3. The density of the halogens or group 17 elements increases down the group, which is why bromine is liquid and astatine is a solid at room temperature.
Mercury is a natural chemical element, metal, liquid, placed in group 12 (zinc group).