By the early 1890s, the Pinkerton National Detective Agency employed more agents than there were members of the United States Army.
Iodine monochloride is the chemical compound with the formula ICl. It is a red-brown compound that melts near room temperature. Because of the difference in the electronegativity of iodine and chlorine, ICl is highly polar and behaves as a source of I+. Â»
All halogens possess the oxidation state 0 in their diatomic forms. Fluorine exhibits the oxidation states of â1 (Fâ ion) and +1 (hypofluorous acid). The principal oxidation states of chlorine, bromine, and iodine are â1, +1, +3, +5, and +7. The oxyacids are compounds in which halogen atoms are joined to oxygen atoms. The oxyacids are all powerful oxidizing agents, which can be reduced to the corresponding hydrogen halidesâthe oxidation numbers changing from positive to â1 in the process.