
William W. answered 10/30/20
Math and science made easy - learn from a retired engineer
The only elements that are liquids at standard temperature and pressure (aka STP) are Bromine and Mercury.
If you look on the Periodic Table, you can find what Group those elements are in. Bromine as an atomic number of 35 and Mercury has an atomic number of 80.
The group is the vertical column they are in starting at Group 1 on the very left side of the Periodic Table (where we find Hydrogen, Lithium, Sodium and so forth) and going up to Group 18 on the very right of the Periodic Table (where we find Helium, Neon, Argon, and so forth)
William W.
Did you mean to write Group 12 Robert?10/30/20