Lead is a heavy metal that is denser than most common materials. The information contained in this website is for general information purposes only. Thulium is an easily workable metal with a bright silvery-gray luster. The most stable known isotope, 269Hs, has a half-life of approximately 9.7 seconds. It has an estimated density of 40.7 x 103 kg/m3. Each nuclide is denoted by chemical symbol of the element (this specifies Z) with tha atomic mass number as supescript. Rubidium is a soft, silvery-white metallic element of the alkali metal group, with an atomic mass of 85.4678. The chemical symbol for Argon is Ar. Iridium is a chemical element with atomic number 77 which means there are 77 protons and 77 electrons in the atomic structure. The chemical symbol for Nitrogen is N. Nitrogen is a colourless, odourless unreactive gas that forms about 78% of the earth’s atmosphere. [62] By itself or with potassium, sodium is a desiccant; it gives an intense blue coloration with benzophenone when the desiccate is dry. The chemical symbol for Radium is Ra. Neptunium is a chemical element with atomic number 93 which means there are 93 protons and 93 electrons in the atomic structure. By mass, oxygen is the third-most abundant element in the universe, after hydrogen and helium. Thulium is an easily workable metal with a bright silvery-gray luster. The chemical symbol for Tungsten is W. Tungsten is a rare metal found naturally on Earth almost exclusively in chemical compounds. Mass number is protons plus neutrons and can be different for different isotopes. That tells you the number of protons and electrons (when it isn't an ion). is given at the top left of the element's symbol, for example, sodium has a mass number of 23. Bromine is the third-lightest halogen, and is a fuming red-brown liquid at room temperature that evaporates readily to form a similarly coloured gas. In nuclear industry gadolinium is commonly used as a neutron absorber due to very high neutron absorbtion cross-section of two isotopes 155Gd and 157Gd. Get your answers by asking now. They collect leaking sodium into a leak-recovery tank where it is isolated from oxygen. 0 0. Sodium is a soft, silvery-white, highly reactive metal. The chemical symbol for Samarium is Sm. [91], In C4 plants, sodium is a micronutrient that aids metabolism, specifically in regeneration of phosphoenolpyruvate and synthesis of chlorophyll. Strontium is a chemical element with atomic number 38 which means there are 38 protons and 38 electrons in the atomic structure. Humphry Davy (1809) "Ueber einige neue Erscheinungen chemischer Veränderungen, welche durch die Electricität bewirkt werden; insbesondere über die Zersetzung der feuerbeständigen Alkalien, die Darstellung der neuen Körper, welche ihre Basen ausmachen, und die Natur der Alkalien überhaupt" (On some new phenomena of chemical changes that are achieved by electricity; particularly the decomposition of flame-resistant alkalis [i.e., alkalies that cannot be reduced to their base metals by flames], the preparation of new substances that constitute their [metallic] bases, and the nature of alkalies generally), sixth most abundant element in the Earth's crust, "Atomic weights of the elements 2013 (IUPAC Technical Report)", Magnetic susceptibility of the elements and inorganic compounds, "Determination of Sodium with Ion-Selective Electrodes", "On some new phenomena of chemical changes produced by electricity, particularly the decomposition of the fixed alkalies, and the exhibition of the new substances which constitute their bases; and on the general nature of alkaline bodies", "Chemische Analyse durch Spectralbeobachtungen", "How surface composition and meteoroid impacts mediate sodium and potassium in the lunar exosphere", 10.1002/0471238961.1915040912051311.a01.pub3, "Los Alamos National Laboratory – Sodium", American Society for Testing and Materials, "Laser Development for Sodium Laser Guide Stars at ESO", "Über das Zustandsdiagramm der Kalium-Natriumlegierungen", "Sodium and Potassium Quick Health Facts", U.S. Department of Health and Human Services, "Impact of dietary and lifestyle factors on the prevalence of hypertension in Western populations", "Global burden of blood-pressure-related disease, 2001", "Use the Nutrition Facts Label to Reduce Your Intake of Sodium in Your Diet", "Manganese Nutrition and Photosynthesis in NAD-malic enzyme C4 plants PhD dissertation", Hazard Rating Information for NFPA Fire Diamonds, http://terpconnect.umd.edu/~pbs/2013-An-et-al-FSJ.pdf, Etymology of "natrium" – source of symbol Na, The Wooden Periodic Table Table's Entry on Sodium, https://en.wikipedia.org/w/index.php?title=Sodium&oldid=974869407, Biology and pharmacology of chemical elements, Short description is different from Wikidata, Wikipedia pages semi-protected against vandalism, Articles with unsourced statements from June 2020, Creative Commons Attribution-ShareAlike License, This page was last edited on 25 August 2020, at 14:04.

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