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»
Chlorine, however, replaces only bromide, iodide, and astatide ions, and bromine only iodide and astatide ions. Free fluorine, chlorine, bromine, and iodine are expected to replace astatide ions. The halogen elements all form compounds with hydrogen, the hydrogen halides.