Dynamic viscosity of liquid sodium at different temperatures 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: komcjj@gmail.com Sodium is a chemical element. It is a soft, silvery-white, highly reactive metal. Many salts of sodium are highly water-soluble: sodium ions have been leached by the action of water from the Earth's minerals over eons, and thus sodium and chlorine are the most common dissolved elements by weight in the oceans. Sodium metal can be easily cut with a knife and is a good conductor of electricity and heat because it has only one electron in its valence shell, resulting in weak metallic bonding and free electrons, which carry energy. Due to having low atomic mass and large atomic radius, sodium is third-least dense of all elemental metals and is one of only three metals that can float on water, the other two being lithium and potassium. The melting and boiling points of sodium are lower than those of lithium but higher than those of the heavier alkali metals potassium, rubidium, and caesium, following periodic trends down the group. Metallic sodium is generally less reactive than potassium and more reactive than lithium. Temperature (degrees Celsius), Dynamic viscosity (grams per meter per second) 200 0.451 250 0.387 300 0.341 350 0.306 400 0.278 450 0.255 500 0.237 550 0.221 600 0.208 650 0.196 700 0.186 750 0.177 800 0.17 850 0.163 900 0.156 950 0.151 1000 0.146 1050 0.141 1100 0.137 1150 0.133 1200 0.129 1250 0.126 1300 0.123 1350 0.12 1400 0.117 1450 0.115 1500 0.113 1550 0.11 1600 0.108 1650 0.106 1700 0.105 1750 0.103 1800 0.101 1850 0.1 1900 0.098 1950 0.097 2000 0.096 Contributor: Junjie Chen, ORCID: 0000-0001-5055-4309, E-mail address: komcjj@gmail.com, 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: komcjj@gmail.com, Department of Energy and Power Engineering, School of Mechanical and Power Engineering, Henan Polytechnic University, 2000 Century Avenue, Jiaozuo, Henan, 454000, P.R. China