Can France claim the first periodic table? Probably not, but a French Geology Professor ... but Mendeleev saw that iodine was very similar to the rest of the halogens (fluorine, chlorine, bromine), ...

A halogen cannot displace itself from a solution of one of its salts, eg potassium bromine would not displace bromine water, so these combinations are not done.

The periodic table The periodic table is a chart of all ... The three common Group 7 elements are chlorine, bromine and iodine. The word ‘halogen’ means 'salt former'. Group 0 and testing ...