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»
Ernest Z. Potassium iodide is an ionic compound. Potassium is in Group 1 of the Periodic Table. That means it is a metal. Iodine is in Group 17 of the Periodic Table. That means it is a nonmetal. Metals react with nonmetals to form ionic compounds. A sodium atom transfers an electron to a chlorine atom to form a sodium ion and a chloride ion. The product is the ionic compound, sodium chloride. In the same way, a potassium atom transfers an electron to an iodine atom to form a potassium ion and an iodide ion. So, potassium iodide is an ionic compound.