Bromine
If you mean group 7A, the element that is a liquid at room temperature is bromine.
Bromine, group 17; Mercury, group 12. Both are liquids at STP
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.)
group 18
the only liquid halide is bromine
If you mean group 7A, the element that is a liquid at room temperature is bromine.
Bromine, group 17; Mercury, group 12. Both are liquids at STP
Group 17 (old name: VIIA) contains Bromine andGroup 12 of the transition elements contains MercuryBoth elements are liquids at room temperature, RTP but only Mercury, Hg is a liquid at STP
Bromine is the only element acts as a liquid in the room temperature. The upper elements in the same group are gases. Iodine is a solid that can undergo sublimation in 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.)
group 18
group 18
Zn=Zinc, which is a solid; Hg=Mercury, which is a liquid. They are both in group 12.
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.
the only liquid halide is bromine
The only metal that is liquid (Room temperature is considered to be 200C by chemists.) is Mercury it is in group 12 of the periodic table and is a transition metal. Gallium melts at just under 300C so on a hot day it is also liquid.
The only metal that is liquid (Room temperature is considered to be 200C by chemists.) is Mercury it is in group 12 of the periodic table and is a transition metal. Gallium melts at just under 300C so on a hot day it is also liquid.