Instruction Group 1and 4 will focus on Group 1 of periodic table group 2 and 5 will focus on group 7 of periodic table Group 3 will focus on group 0 of periodic table Group 1 Metals group 1 of the periodic table is called alkali metals. They have similar properties, such as being shiny and good conductors of electricity. Group 1 metals typically have lower melting and boiling points than other metals. These are the trends of the group 1 metals as you move down the group: Melting and boiling points decrease Relative atomic mass increases Reactivity increases Group 7: The elements in group 7 of the periodic table are called halogens. They are all non-metals and have similar properties. The table below shows the properties of the first five halogens at room temperature. Halogen Melting point Colour Boiling Point Atomic number Mass number Fluorine -220 Yel