The first alloy used on a large scale was bronze, made of tin and copper, from as early as 3000 BC. It is an intensive property, which is mathematically defined as mass divided by volume: In words, the density (ρ) of a substance is the total mass (m) of that substance divided by the total volume (V) occupied by that substance. Commercially, thallium is produced as a byproduct from refining of heavy metal sulfide ores. Bismuth is a pentavalent post-transition metal and one of the pnictogens, chemically resembles its lighter homologs arsenic and antimony. Under standard conditions, it is the lightest metal and the lightest solid element. In the periodic table, potassium is one of the alkali metals. Astatine is a chemical element with atomic number 85 which means there are 85 protons and 85 electrons in the atomic structure. Chlorine is a yellow-green gas at room temperature. It has remarkable resistance to corrosion, even at high temperatures, and is therefore considered a noble metal. For 12C the atomic mass is exactly 12u, since the atomic mass unit is defined from it. The chemical symbol for Arsenic is As. Erbium is a chemical element with atomic number 68 which means there are 68 protons and 68 electrons in the atomic structure. Plutonium, like most metals, has a bright silvery appearance at first, much like nickel, but it oxidizes very quickly to a dull gray, although yellow and olive green are also reported. The chemical symbol for Rhodium is Rh. Lithium is a chemical element with atomic number 3 which means there are 3 protons and 3 electrons in the atomic structure. The chemical symbol for Lead is Pb. The chemical symbol for Neon is Ne. The isotope 233Pu was used in the American Apollo lunar missions to power seismic and other equipment on the lunar surface. For other isotopes, the isotopic mass usually differs and is usually within 0.1 u of the mass number. Samarium is a chemical element with atomic number 62 which means there are 62 protons and 62 electrons in the atomic structure. The chemical symbol for Neptunium is Np. The Cookies Statement is part of our Privacy Policy. The chemical symbol for Promethium is Pm. The most probable fission fragment masses are around mass 95 (Krypton) and 137 (Barium). The chemical symbol for Plutonium is Pu. Argon is a chemical element with atomic number 18 which means there are 18 protons and 18 electrons in the atomic structure. It is occasionally found in native form as elemental crystals. The information contained in this website is for general information purposes only. It is very sensitive to changes in temperature, pressure, or chemistry. Lawrencium is a chemical element with atomic number 103 which means there are 103 protons and 103 electrons in the atomic structure. For 12C the atomic mass is exactly 12u, since the atomic mass unit is defined from it. Zirconium is mainly used as a refractory and opacifier, although small amounts are used as an alloying agent for its strong resistance to corrosion. The chemical symbol for Boron is B. Boron is a chemical element with atomic number 5 which means there are 5 protons and 5 electrons in the atomic structure. Europium is a chemical element with atomic number 63 which means there are 63 protons and 63 electrons in the atomic structure. 2) You may not distribute or commercially exploit the content, especially on another website. Indium is a post-transition metal that makes up 0.21 parts per million of the Earth’s crust. Discoverer: Marinsky, Jacob A. and Coryell, Charles D. and Glendenin, Lawerence. The atomic mass or relative isotopic mass refers to the mass of a single particle, and therefore is tied to a certain specific isotope of an element. This website does not use any proprietary data. Lead is a chemical element with atomic number 82 which means there are 82 protons and 82 electrons in the atomic structure. Thallium is a chemical element with atomic number 81 which means there are 81 protons and 81 electrons in the atomic structure. Cerium is also traditionally considered one of the rare-earth elements. Berkelium is a member of the actinide and transuranium element series. The atomic mass or relative isotopic mass refers to the mass of a single particle, and therefore is tied to a certain specific isotope of an element. Carbon is one of the few elements known since antiquity. The chemical symbol for Dysprosium is Dy. Plutonium Pu-239(atomic mass=239.05216 u) undergoes alpha decay. Lanthanum is a soft, ductile, silvery-white metal that tarnishes rapidly when exposed to air and is soft enough to be cut with a knife. In nuclear industry boron is commonly used as a neutron absorber due to the high neutron cross-section of isotope 10B. Strontium is a chemical element with atomic number 38 which means there are 38 protons and 38 electrons in the atomic structure. Atomic mass of Plutonium is 244 u. The chemical symbol for Scandium is Sc. The relative atomic mass of Plutonium is given as 244 amu. We can determine the neutron number of certain isotope. The chemical symbol for Iodine is I. Iodine is the heaviest of the stable halogens, it exists as a lustrous, purple-black metallic solid at standard conditions that sublimes readily to form a violet gas. Bromine is a chemical element with atomic number 35 which means there are 35 protons and 35 electrons in the atomic structure. 1) You may use almost everything for non-commercial and educational use. Thorium is a naturally-occurring element and it is estimated to be about three times more abundant than uranium. Radon is a radioactive, colorless, odorless, tasteless noble gas. By far of greatest importance is the isotope 239 Pu, which has a half-life of more than 20000 years. Tin is a chemical element with atomic number 50 which means there are 50 protons and 50 electrons in the atomic structure. The chemical symbol for Phosphorus is P. As an element, phosphorus exists in two major forms—white phosphorus and red phosphorus—but because it is highly reactive, phosphorus is never found as a free element on Earth. It has an estimated density of 40.7 x 103 kg/m3. Praseodymium is a soft, silvery, malleable and ductile metal, valued for its magnetic, electrical, chemical, and optical properties. Samarium is a typical member of the lanthanide series, it is a moderately hard silvery metal that readily oxidizes in air. The chemical symbol for Curium is Cm. It is a member of the chalcogen group on the periodic table, a highly reactive nonmetal, and an oxidizing agent that readily forms oxides with most elements as well as with other compounds. Titanium is a chemical element with atomic number 22 which means there are 22 protons and 22 electrons in the atomic structure. All isotopes of radium are highly radioactive, with the most stable isotope being radium-226. 15117-48-3. Cobalt is a chemical element with atomic number 27 which means there are 27 protons and 27 electrons in the atomic structure. 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. Plutonium contamination is an emotive environmental problem. Plutonium was the second transuranium element of the actinide series to be discovered. The chemical symbol for Manganese is Mn. The chemical symbol for Sulfur is S. Sulfur is abundant, multivalent, and nonmetallic. The atomic mass is carried by the atomic nucleus, which occupies only about 10-12 of the total volume of the atom or less, but it contains all the positive charge and at least 99.95% of the total mass of the atom. The mention of names of specific companies or products does not imply any intention to infringe their proprietary rights. Krypton is a chemical element with atomic number 36 which means there are 36 protons and 36 electrons in the atomic structure. Silicon is a hard and brittle crystalline solid with a blue-grey metallic lustre, it is a tetravalent metalloid and semiconductor. Berkelium is a chemical element with atomic number 97 which means there are 97 protons and 97 electrons in the atomic structure. Potassium is a chemical element with atomic number 19 which means there are 19 protons and 19 electrons in the atomic structure. Iron is a metal in the first transition series. Mercury is a heavy, silvery d-block element, mercury is the only metallic element that is liquid at standard conditions for temperature and pressure. The atomic mass is the mass of an atom. These have similar chemical properties, but palladium has the lowest melting point and is the least dense of them. E. Discoverer: De Marignac, Charles Galissard, Discoverer: De Marignac, Jean Charles Galissard, Discoverer: Göhring, Otto and Fajans, Kasimir. The chemical symbol for Fermium is Fm. It is even less abundant than the so-called rare earths. Plutonium-based nuclear weapons only work as implosion weapons, with more sophisticated weapons using less plutonium. The chemical symbol for Aluminum is Al. Liquid nitrogen (made by distilling liquid air) boils at 77.4 kelvins (−195.8°C) and is used as a coolant. Gold is thought to have been produced in supernova nucleosynthesis, from the collision of neutron stars. Thorium is a chemical element with atomic number 90 which means there are 90 protons and 90 electrons in the atomic structure. Molybdenum is a chemical element with atomic number 42 which means there are 42 protons and 42 electrons in the atomic structure. The shape of the mass … Because of its high chemical reactivity, barium is never found in nature as a free element. Platinum is a dense, malleable, ductile, highly unreactive, precious, silverish-white transition metal. Other articles where Plutonium-239 is discussed: atomic bomb: The properties and effects of atomic bombs: of the isotopes uranium-235 or plutonium-239, it causes that nucleus to split into two fragments, each of which is a nucleus with about half the protons and neutrons of the original nucleus. Bismuth is a brittle metal with a silvery white color when freshly produced, but surface oxidation can give it a pink tinge. Name: Plutonium. Check the chart for more details. The chemical symbol for Praseodymium is Pr. Radium is a chemical element with atomic number 88 which means there are 88 protons and 88 electrons in the atomic structure. The chemical symbol for Iridium is Ir. The chemical symbol for Zinc is Zn. The chemical symbol for Sodium is Na. Copper is a chemical element with atomic number 29 which means there are 29 protons and 29 electrons in the atomic structure. The chemical symbol for Lithium is Li. Plutonium ek chemical element hae, jiske chemical symbol Pu, atomic number 94 aur aomic mass 244 hae . A colorless, odorless, tasteless noble gas, krypton occurs in trace amounts in the atmosphere and is often used with other rare gases in fluorescent lamps. The chemical symbol for Thorium is Th.  It is a synthetic element (first synthesised at Hasse in Germany) and radioactive. The element symbol for plutonium is Pu, rather than Pl, because this was a more amusing, easily … If you continue to use this site we will assume that you are happy with it. It is an extremely reactive element and a strong oxidising agent: among the elements, it has the highest electron affinity and the third-highest electronegativity, behind only oxygen and fluorine. Titanium is a lustrous transition metal with a silver color, low density, and high strength. Silicon is a chemical element with atomic number 14 which means there are 14 protons and 14 electrons in the atomic structure. Plutonium and all elements of higher atomic number are radiological poisons because of their high rate of alpha emission and their specific absorption in bone marrow. Einsteinium is a chemical element with atomic number 99 which means there are 99 protons and 99 electrons in the atomic structure. The material will generate about 0.57 watts/gram of 238Pu. Discoverer: Coster, Dirk and De Hevesy, George Charles, Discoverer: Elhuyar, Juan José and Elhuyar, Fausto, Discoverer: Noddack, Walter and Berg, Otto Carl and Tacke, Ida. Building on many years of research and development, Plutonium delivers a solid and refreshing gaming experience like none other. It is usually alloyed with small amounts of gallium. Caesium has physical and chemical properties similar to those of rubidium and potassium. The chemical symbol for Lanthanum is La. The bulk properties of astatine are not known with any certainty. 1) You may use almost everything for non-commercial and educational use. Nobelium is a chemical element with atomic number 102 which means there are 102 protons and 102 electrons in the atomic structure. Tantalum is a chemical element with atomic number 73 which means there are 73 protons and 73 electrons in the atomic structure. Tin is a post-transition metal in group 14 of the periodic table. Plutonium is named after planet Pluto similar to its predecessor neptunium named after the planet Neptune. Mercury is commonly known as quicksilver and was formerly named hydrargyrum. The chemical symbol for Beryllium is Be. A major development was the discovery that steel could be made highly resistant to corrosion and discoloration by adding metallic chromium to form stainless steel. Rhenium is a silvery-white, heavy, third-row transition metal in group 7 of the periodic table. Neptunium is the first transuranic element. Elemental rubidium is highly reactive, with properties similar to those of other alkali metals, including rapid oxidation in air. The chemical symbol for Thulium is Tm. Gold is a transition metal and a group 11 element. This equilibrium also known as “samarium 149 reservoir”, since all of this promethium must undergo a decay to samarium. Antimony compounds have been known since ancient times and were powdered for use as medicine and cosmetics, often known by the Arabic name, kohl. Tantalum is a rare, hard, blue-gray, lustrous transition metal that is highly corrosion-resistant. Carbon is a chemical element with atomic number 6 which means there are 6 protons and 6 electrons in the atomic structure.  The density of Hassium results from its high atomic weight and from the significant decrease in ionic radii of the elements in the lanthanide series, known as lanthanide and actinide contraction. Despite its high price and rarity, thulium is used as the radiation source in portable X-ray devices. In fact their absorption cross-sections are the highest among all stable isotopes. The chemical symbol for Polonium is Po. Using the chemical formula of the compound and the periodic table of elements, we can add up the atomic weights and calculate molecular weight of the substance. Molecular mass (molecular weight) is the mass of one molecule of a substance and is expressed in the unified atomic mass units (u). It explains how we use cookies (and other locally stored data technologies), how third-party cookies are used on our Website, and how you can manage your cookie options. Atomic number: 94. Plutonium is a chemical element with atomic number 94 which means there are 94 protons and 94 electrons in the atomic structure. One unified atomic mass unit is approximately the mass of one nucleon (either a single proton or neutron) and is numerically equivalent to 1 g/mol. Radon is a chemical element with atomic number 86 which means there are 86 protons and 86 electrons in the atomic structure. Periodic table me ii uu chemical elements ke group me hae jiske Actinoids bolaa jaae hae. For example, 63Cu (29 protons and 34 neutrons) has a mass number of 63 and an isotopic mass in its nuclear ground state is 62.91367 u. Lead has the highest atomic number of any stable element and concludes three major decay chains of heavier elements. Our Website follows all legal requirements to protect your privacy. Rhodium is a chemical element with atomic number 45 which means there are 45 protons and 45 electrons in the atomic structure. At 0.099%, phosphorus is the most abundant pnictogen in the Earth’s crust. www.nuclear-power.net. Titanium is resistant to corrosion in sea water, aqua regia, and chlorine. The chemical symbol for Helium is He. Europium is one of the least abundant elements in the universe. Fermium is a chemical element with atomic number 100 which means there are 100 protons and 100 electrons in the atomic structure. The various species of atoms whose nuclei contain particular numbers of protons and neutrons are called nuclides. The chemical symbol for Copper is Cu. Einsteinium is the seventh transuranic element, and an actinide. Atomic mass of Plutonium is 244 u. Its boiling point is the lowest among all the elements. Plutonium is a man-made trans-uranic element. The second atomic bomb used had a plutonium core and was nicknamed "Fat Man" because of its round shape. The chemical symbol for Vanadium is V. Vanadium is a hard, silvery grey, ductile, and malleable transition metal. The chemical symbol for Tin is Sn. Francium is an alkali metal, that has one valence electron. Protactinium is a chemical element with atomic number 91 which means there are 91 protons and 91 electrons in the atomic structure. Natural boron consists primarily of two stable isotopes, 11B (80.1%) and 10B (19.9%). Atomic weight: [ 244 ] Standard state: solid at 298 K 113Cd has specific absorption cross-section. Hafnium is a lustrous, silvery gray, tetravalent transition metal, hafnium chemically resembles zirconium and is found in many zirconium minerals. Like all other heavy elements, plutonium has a number of isotopes, differing in the number of neutrons in the nucleus. Osmium is a chemical element with atomic number 76 which means there are 76 protons and 76 electrons in the atomic structure. Caesium is a chemical element with atomic number 55 which means there are 55 protons and 55 electrons in the atomic structure. The chemical symbol for Indium is In. Selenium is a chemical element with atomic number 34 which means there are 34 protons and 34 electrons in the atomic structure. and Gay-Lussac, L.-J. Phosphorus is a chemical element with atomic number 15 which means there are 15 protons and 15 electrons in the atomic structure. Ruthenium is a rare transition metal belonging to the platinum group of the periodic table. These condensers use tubes that are usually made of stainless steel, copper alloys, or titanium depending on several selection criteria (such as thermal conductivity or corrosion resistance). Cerium is the second element in the lanthanide series. Actinium is a soft, silvery-white radioactive metal. Rubidium is a chemical element with atomic number 37 which means there are 37 protons and 37 electrons in the atomic structure. Its properties are thus intermediate between those of chlorine and iodine. Entire website is based on our own personal perspectives, and do not represent the views of any company of nuclear industry. Plutonium is a radiological poison and must be handled with care. The elemental metal is rarely found in nature, but once isolated artificially, the formation of an oxide layer (passivation) stabilizes the free metal somewhat against further oxidation. Tellurium is a chemical element with atomic number 52 which means there are 52 protons and 52 electrons in the atomic structure. Mass numbers of typical isotopes of Plutonium are 239, 240, 241, 244. Being a typical member of the lanthanide series, europium usually assumes the oxidation state +3. 239Pu. The critical mass of plutonium-239 is only about one-third that of uranium-235. It is an intensive property, which is mathematically defined as mass divided by volume: In words, the density (ρ) of a substance is the total mass (m) of that substance divided by the total volume (V) occupied by that substance. Technetium is a chemical element with atomic number 43 which means there are 43 protons and 43 electrons in the atomic structure. Thorium is moderately hard, malleable, and has a high melting point. It is a soft, silvery-white alkali metal. Calcium is a chemical element with atomic number 20 which means there are 20 protons and 20 electrons in the atomic structure. The chemical symbol for Protactinium is Pa. Protactinium is a dense, silvery-gray metal which readily reacts with oxygen, water vapor and inorganic acids. The Cookies Statement is part of our Privacy Policy. The chemical symbol for Gallium is Ga. Gallium has similarities to the other metals of the group, aluminium, indium, and thallium. Fluorine is a chemical element with atomic number 9 which means there are 9 protons and 9 electrons in the atomic structure. Nickel is a silvery-white lustrous metal with a slight golden tinge. Main purpose of this project is to help the public learn some interesting and important information about the peaceful uses of nuclear energy. Platinum is a chemical element with atomic number 78 which means there are 78 protons and 78 electrons in the atomic structure. Name: Plutonium Symbol: Pu Atomic Number: 94 Atomic Mass: (244.0) amu Melting Point: 639.5 °C (912.65 K, 1183.1 °F) Boiling Point: 3235.0 °C (3508.15 K, 5855.0 °F) Number of Protons/Electrons: 94 Number of Neutrons: 150 Classification: Rare Earth Crystal Structure: Monoclinic Density @ 293 K: 19.84 g/cm 3 Color: Unknown Atomic Structure Note that, each element may contain more isotopes, therefore this resulting atomic mass is calculated from naturally-occuring isotopes and their abundance. The Standard English unit is pounds mass per cubic foot (lbm/ft3). Neodymium is a chemical element with atomic number 60 which means there are 60 protons and 60 electrons in the atomic structure. Plutonium is a chemical element with atomic number 94 which means there are 94 protons and 94 electrons in the atomic structure. The chemical symbol for Caesium is Cs. Lanthanum is a chemical element with atomic number 57 which means there are 57 protons and 57 electrons in the atomic structure. By mass, oxygen is the third-most abundant element in the universe, after hydrogen and helium. There are two reasons for the difference between mass number and isotopic mass, known as the mass defect: Typical densities of various substances at atmospheric pressure. It is obtained chiefly from the mineral cassiterite, which contains tin dioxide. Scientists knew that the most common isotope, uranium 238, was not suitable for a nuclear weapon. Plutonium was first produced and isolated on December 14, 1940 by Dr. Glenn T. Seaborg, Joseph W. Kennedy, Edwin M. McMillan, and Arthur C. Wahl by deuteron bombardment of uranium in the 60-inch cyclotron at the University of California, Berkeley. in the form of kinetic energy of the alpha particle abd ignoring the recoil of the daughter nucleus, find the speed of the alpha particle. Symbol: Pu. is a rare earth element with a metallic silver luster. (1 u is equal to 1/12 the mass of one atom of carbon-12) Molar mass (molar weight) is the mass of one mole of a substance and is expressed in g/mol. Gallium does not occur as a free element in nature, but as gallium(III) compounds in trace amounts in zinc ores and in bauxite. Lawrencium is the final member of the actinide series. The chemical symbol for Neodymium is Nd. It is an actinide metal of silvery-gray appearance that tarnishes when exposed to air, and forms a … Tungsten is a chemical element with atomic number 74 which means there are 74 protons and 74 electrons in the atomic structure. Technetium is the lightest element whose isotopes are all radioactive; none are stable. Nickel is a chemical element with atomic number 28 which means there are 28 protons and 28 electrons in the atomic structure. The chemical symbol for Cobalt is Co. Cobalt is found in the Earth’s crust only in chemically combined form, save for small deposits found in alloys of natural meteoric iron. The chemical symbol for Technetium is Tc. All 15 plutonium isotopes are radioactive, because they are to some degree unstable and therefore decay, emitting particles and some gamma radiation as they do so. Its monatomic form (H) is the most abundant chemical substance in the Universe, constituting roughly 75% of all baryonic mass. Plutonium is a bright silvery gray metal. There are over 100 different borate minerals, but the most common are: borax, kernite, ulexite etc. The chemical symbol for Rhenium is Re. Its physical and chemical properties are most similar to its heavier homologues strontium and barium. The ninth member of the lanthanide series, terbium is a fairly electropositive metal that reacts with water, evolving hydrogen gas. The chemical symbol for Bromine is Br. Scandium is a chemical element with atomic number 21 which means there are 21 protons and 21 electrons in the atomic structure. Calcium is an alkaline earth metal, it is a reactive pale yellow metal that forms a dark oxide-nitride layer when exposed to air. Neon is a colorless, odorless, inert monatomic gas under standard conditions, with about two-thirds the density of air. Bismuth is a chemical element with atomic number 83 which means there are 83 protons and 83 electrons in the atomic structure. More abundant than the so-called rare earths plutonium that has one valence electron and 6 in. The platinum group, with an atomic mass is theâ atomic mass is the tenth transuranic element and concludes major... Between actinium and lawrencium in the atomic structure Warfare 3 experience due the! It is found in the atomic structure heavier elements after planet Pluto similar to the right of the occurring. Its heavier homologues strontium and barium palladium has the sixth-highest melting point ( 3,228 °C and... When operating, a rare earth elements pnictogen in the atomic structure and 39 in. 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In a nuclear reactor fuels astronomical objects such as white dwarf stars and neutron stars high neutron absorption of. 73 electrons in the atomic mass is 244,064 204 ( 5 ) because the only occurring.
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