The resulting solution would be basic because of the dissolved hydroxide. By using ThoughtCo, you accept our, Most Reactive Metal on the Periodic Table, Periodic Table Study Guide - Introduction & History, Exothermic Reaction Examples - Demonstrations to Try. Well, francium is so rare that it hasn't really been procured in large amounts. So far as I know, nobody has ever assembled enough francium in one place to carry out its reactions with halogens. Francium is below cesium on the table and would react more readily and violently. All rights reserved. It is umlikely that anyone has ever reacted the metal with water. The resulting solution would be basic because of the dissolved hydroxide. The reason for the strong exothermic reaction is because francium is an alkali metal. Francium would input the energy of its radioactive decay, which is expected to magnify the reaction with water. A fresh francium surface would soon tarnish because of reaction with oxygen and moisture from the air. However, given that all the other Group 1 elements react to form colourless basic solutions of the hydroxide and hydrogen gas (H2), it would be strange were francium not to do the same. Most likely it would sink and subsequently react with water. So, it would reacts with fluorine, F2, chlorine, Cl2, bromine, I2, and iodine, I2, to form respectively francium(I) bromide, FrF, francium(I) chloride, FrCl, francium(I) bromide, FrBr, and francium(I) iodide, FrI. A small amount of lithium will float on water and burn. The element can be prepared by bombarding thorium with protons. Were francium ever to be burned in air, the result is expected to be francium superoxide, FrO2. Well… it would react violently generating Francium hydroxide and liberating hydrogen gas. The reaction would probably sbe faster than that of caesium - in other words dangerously quick. Like alkali metals it is readily oxidized in air and vigorously react with water. Francium is very scarce and expensive. Dr. Helmenstine holds a Ph.D. in biomedical sciences and is a science writer, educator, and consultant. Significance and Uses. The resulting solution would be basic because of the dissolved hydroxide. It is umlikely that anyone has ever reacted the metal with water. The piece of francium would blow apart, while the reaction with water would produce hydrogen gas, francium hydroxide, and a lot of heat. White, very fusible. As you move down the first column of the periodic table, the reaction between the alkali metals and water becomes increasingly violent, as follows: This occurs because each of the alkali metals is characterized by having a single valence electron. So far as I know, nobody has ever assembled enough francium in one place to know for certain its appearance. The Group 1 elements have a specific family name - alkali metals. The reaction would probably sbe faster than that of caesium - in other words dangerously quick. What Are the Properties of the Alkaline Earth Metals? The reaction would probably sbe faster than that of caesium - in other words dangerously quick. She has taught science courses at the high school, college, and graduate levels. There is no mention in the article about its reactivity to water. It is probably a very soft, easily cut, solid metal, perhaps even a liquid at room temperature. Metallic Character: Properties and Trends, The Most Toxic Elements on the Periodic Table, reason for the strong exothermic reaction, Ph.D., Biomedical Sciences, University of Tennessee at Knoxville, B.A., Physics and Mathematics, Hastings College. As you move down the periodic table, the atoms become larger and the lone valence electron is easier to remove, making the element more reactive. The hydroxides formed in all of these reactions dissolve in water to form alkaline solutions. Potassium breaks apart, burning with a violet flame. First, high fives all around to the mad scientist that pulled that off. It has slightly higher ionization energy than cesium. ​. These solutions turn universal indicator purple, showing they are strongly alkaline. I'm sure, however, that it's pretty massive. The most reactive of all metals, chemical behavior similar to cesium. Alkali metal. Potassium breaks apart, burning with a violet flame. ". 2Fr(s) + H2SO4(aq) → 2Fr+(aq) + SO42-(aq) + H2(g). ThoughtCo uses cookies to provide you with a great user experience. All the alkali metals are silvery solids with low densities and low melting points. Francium is very scarce and expensive. WebElements: THE periodic table on the WWW [www.webelements.com] It is umlikely that anyone has ever reacted the metal with water. Francium is very scarce and expensive. There are no commercial applications due to its instability and rarity in nature.