Dynamic viscosity of liquid cesium at different temperatures

<strong>Dynamic viscosity of liquid cesium at different temperatures</strong> Junjie Chen Department of Energy and Power Engineering, School of Mechanical and Power Engineering, Henan Polytechnic University, 2000 Century Avenue, Jiaozuo, Henan, 454000, P.R. China Contributor: Junjie Chen, ORCID: 0000-0001-5055-4309, E-mail address: [e-mail] This silvery metal with a golden cast is the most reactive and one of the softest of all metals. It melts just above room temperature. It is about half as abundant as lead and 70 times as abundant as silver. The primary difficulty associated with the production of pure cesium is that cesium is always found together with rubidium in nature and is also mixed with other alkali metals. Because cesium and rubidium are very similar chemically, their separation presented numerous problems before the advent of ion-exchange methods and ion-specific complexing agents such as crown ethers. Once pure salts have been prepared, it is a straightforward task to convert them to the free metal. Cesium metal is produced in rather limited amounts because of its relatively high cost. Cesium has application in thermionic power converters that generate electricity directly within nuclear reactors or from the heat produced by radioactive decay. Cesium is difficult to handle because it reacts spontaneously in air. If a metal sample has a large enough surface area, it can burn to form superoxides. Cesium superoxide has a more reddish cast. Cesium is the most electropositive and most alkaline element, and thus, more easily than all other elements, it loses its single valence electron and forms ionic bonds with nearly all the inorganic and organic anions. Rubidium and cesium are miscible in all proportions and have complete solid solubility. Temperature (degrees Celsius), Dynamic viscosity (grams per meter per second) 50 0.598 100 0.469 150 0.389 200 0.334 250 0.294 300 0.264 350 0.24 400 0.221 450 0.206 500 0.192 550 0.181 600 0.171 650 0.163 700 0.156 750 0.149 800 0.143 850 0.138 900 0.134 950 0.129 1000 0.125 1050 0.122 1100 0.119 1150 0.116 1200 0.113 1250 0.11 1300 0.108 1350 0.106 1400 0.104 1450 0.102 1500 0.1 1550 0.098 1600 0.097 1650 0.095 1700 0.094 1750 0.092 1800 0.091 1850 0.090 1900 0.089 1950 0.088 2000 0.086 Contributor: Junjie Chen, ORCID: 0000-0001-5055-4309, E-mail address: [e-mail], Department of Energy and Power Engineering, School of Mechanical and Power Engineering, Henan Polytechnic University, 2000 Century Avenue, Jiaozuo, Henan, 454000, P.R. China