The periodic table of chemical elements, often called the periodic table, organizes all discovered chemical elements in rows (called periods) and columns (called groups) according to increasing atomic ...

On the periodic table, which contains 118 elements, there are only seven diatomic ... They also go by the name "elemental gases." Bromine is always a liquid, while iodine can be a liquid or ...

Can France claim the first periodic table? Probably not ... was very similar to the rest of the halogens (fluorine, chlorine, bromine), and tellurium similar to the group 6 elements (oxygen, sulphur, ...