The chemical symbol for Dysprosium is Dy. Argon is the third-most abundant gas in the Earth’s atmosphere, at 0.934% (9340 ppmv). Very radioactive and harmful. It is by mass the most common element on Earth, forming much of Earth’s outer and inner core. Chromium is a steely-grey, lustrous, hard and brittle metal4 which takes a high polish, resists tarnishing, and has a high melting point. The chemical symbol for Cadmium is Cd. Californium was the sixth synthetic transuranium element of the actinide series to be discovered.It was first produced by Stanley Thompson, Kenneth Street, Albert Ghiorso and Glenn Seaborg in 1950 in California, USA.The researchers bombarded curium-242 with alpha particles in the 60-inch cyclotron in Berkeley, California. It has remarkable resistance to corrosion, even at high temperatures, and is therefore considered a noble metal. Californium. Astatine is the rarest naturally occurring element on the Earth’s crust. 113Cd has specific absorption cross-section. One microgram releases 170 million neutrons per minute, which presents biological hazards. Exact Mass: 252.08163 g/mol: Computed by PubChem 2.1 (PubChem release 2019.06.18) Monoisotopic Mass: 252.08163 g/mol: Computed by PubChem 2.1 (PubChem release 2019.06.18) Topological Polar Surface Area: 0 Ų: Computed by Cactvs 3.4.6.11 (PubChem release 2019.06.18) Heavy Atom Count: 1: Computed by PubChem: Formal Charge: 0: Computed by PubChem: Complexity: 0 The chemical symbol for Thorium is Th. The chemical symbol for Lanthanum is La. Francium is the second-least electronegative element, behind only caesium, and is the second rarest naturally occurring element (after astatine). Atomic Mass of Californium. Cadmium is a chemical element with atomic number 48 which means there are 48 protons and 48 electrons in the atomic structure. The chemical symbol for Thallium is Tl. Californium has an atomic mass of 251 u. It is also sometimes considered the first element of the 6th-period transition metals and is traditionally counted among the rare earth elements. Manganese is a metal with important industrial metal alloy uses, particularly in stainless steels. Palladium, platinum, rhodium, ruthenium, iridium and osmium form a group of elements referred to as the platinum group metals (PGMs). The chemical symbol for Gold is Au. So, the unknown element is, palladium (Pd) The complete nuclear fission of a californium atom will be, Hence, the missing part is, Iridium is a chemical element with atomic number 77 which means there are 77 protons and 77 electrons in the atomic structure. It is fairly soft and slowly tarnishes in air. Selenium is a chemical element with atomic number 34 which means there are 34 protons and 34 electrons in the atomic structure. Molar mass of CfCl2 = 321.906 g/mol. Osmium is a chemical element with atomic number 76 which means there are 76 protons and 76 electrons in the atomic structure. It is a noble metal and a member of the platinum group. Dysprosium is used for its high thermal neutron absorption cross-section in making control rods in nuclear reactors, for its high magnetic susceptibility in data storage applications. Hafnium is a chemical element with atomic number 72 which means there are 72 protons and 72 electrons in the atomic structure. The chemical symbol for Beryllium is Be. The difference is a measure of the nuclear binding energy which holds the nucleus together. Sodium is a soft, silvery-white, highly reactive metal. Although classified as a rare earth element, samarium is the 40th most abundant element in the Earth’s crust and is more common than such metals as tin. Phosphorus is a chemical element with atomic number 15 which means there are 15 protons and 15 electrons in the atomic structure. Astatine is a chemical element with atomic number 85 which means there are 85 protons and 85 electrons in the atomic structure. The chemical symbol for Molybdenum is Mo. The chemical symbol for Osmium is Os. If you want to get in touch with us, please do not hesitate to contact us via e-mail: Discoverer: Ramsey, Sir William and Cleve, Per Teodor. In some respects zinc is chemically similar to magnesium: both elements exhibit only one normal oxidation state (+2), and the Zn2+ and Mg2+ ions are of similar size. References. Cobalt is a chemical element with atomic number 27 which means there are 27 protons and 27 electrons in the atomic structure. The chemical symbol for Ytterbium is Yb. The chemical symbol for Calcium is Ca. Elemental sulfur is a bright yellow crystalline solid at room temperature. The chemical symbol for Lawrencium is Lr. Like the other metals of the platinum group, ruthenium is inert to most other chemicals. The chemical symbol for Chlorine is Cl. Symbol: Cf. The chemical symbol for Platinum is Pt. Gallium does not occur as a free element in nature, but as gallium(III) compounds in trace amounts in zinc ores and in bauxite. … The chemical symbol for Americium is Am. The chemical symbol for Nobelium is No. Magnesium is a chemical element with atomic number 12 which means there are 12 protons and 12 electrons in the atomic structure. In nuclear industry cadmium is commonly used as a thermal neutron absorber due to very high neutron absorption cross-section of 113Cd. Typical densities of various substances are at atmospheric pressure. Protactinium is a chemical element with atomic number 91 which means there are 91 protons and 91 electrons in the atomic structure. Liquid nitrogen (made by distilling liquid air) boils at 77.4 kelvins (−195.8°C) and is used as a coolant. Actinium gave the name to the actinide series, a group of 15 similar elements between actinium and lawrencium in the periodic table. Melting point: 1,652 F (900 C) 7. Thulium is an easily workable metal with a bright silvery-gray luster. Significant concentrations of boron occur on the Earth in compounds known as the borate minerals. Uranium is a chemical element with atomic number 92 which means there are 92 protons and 92 electrons in the atomic structure. The chemical symbol for Palladium is Pd. 3. In nuclear reactors, promethium equilibrium exists in power operation. Convert grams Californium(II) Chloride to moles or moles Californium(II) Chloride to grams. The chemical symbol for Actinium is Ac. 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. and Gay-Lussac, L.-J. The chemical symbol for Barium is Ba. Mendelevium is a chemical element with atomic number 101 which means there are 101 protons and 101 electrons in the atomic structure. Europium is one of the least abundant elements in the universe. Common Uses It is a lanthanide, a rare earth element, originally found in the gadolinite mine in Ytterby in Sweden. Ruthenium is a chemical element with atomic number 44 which means there are 44 protons and 44 electrons in the atomic structure. Carbon is one of the few elements known since antiquity. 9. Sodium is a chemical element with atomic number 11 which means there are 11 protons and 11 electrons in the atomic structure. Molybdenum a silvery metal with a gray cast, has the sixth-highest melting point of any element. Because of its high chemical reactivity, barium is never found in nature as a free element. 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. The chemical symbol for Zinc is Zn. In the periodic table, potassium is one of the alkali metals. Praseodymium is the third member of the lanthanide series and is traditionally considered to be one of the rare-earth metals. 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 Germanium is Ge. + are protons, - are electron, red dots are neutrons. Caesium is a soft, silvery-gold alkali metal with a melting point of 28.5 °C, which makes it one of only five elemental metals that are liquid at or near room temperature. Atomic Mass of Californium Atomic mass of Californium is 251 u. Like all elements with atomic number over 100, lawrencium can only be produced in particle accelerators by bombarding lighter elements with charged particles. Manganese is a chemical element with atomic number 25 which means there are 25 protons and 25 electrons in the atomic structure. (1969), Discoverer: Scientists at Dubna, Russia (1967)/Lawrence Berkeley Laboratory (1970), Discoverer: Armbruster, Paula and Muenzenberg, Dr. Gottfried, Element Category: unknown, probably a transition metal, Discoverer: David Anderson, Ruhani Rabin, Team Updraft, Element Category: unknown, probably a post-transition metal, Discoverer: Hisinger, Wilhelm and Berzelius, Jöns Jacob/Klaproth, Martin Heinrich. Atomic Number: 98. Titanium is resistant to corrosion in sea water, aqua regia, and chlorine. Since the density (ρ) of a substance is the total mass (m) of that substance divided by the total volume (V) occupied by that substance, it is obvious, the density of a substance strongly depends on its atomic mass and also on the atomic number density (N; atoms/cm3). Europium is a moderately hard, silvery metal which readily oxidizes in air and water. Chlorine is a yellow-green gas at room temperature. The seller was the Atomic Energy Commission, which sold the element to academic and industrial buyers. The chemical symbol for Neon is Ne. Despite its high price and rarity, thulium is used as the radiation source in portable X-ray devices. The chemical symbol for Ruthenium is Ru. 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 Iridium is Ir. 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. Polonium is a rare and highly radioactive metal with no stable isotopes, polonium is chemically similar to selenium and tellurium, though its metallic character resembles that of its horizontal neighbors in the periodic table: thallium, lead, and bismuth. The chemical symbol for Arsenic is As. Its properties are thus intermediate between those of chlorine and iodine. For other isotopes, the isotopic mass usually differs and is usually within 0.1 u of the mass number. It is the heaviest element that can be formed by neutron bombardment of lighter elements, and hence the last element that can be prepared in macroscopic quantities. 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. Beryllium is a chemical element with atomic number 4 which means there are 4 protons and 4 electrons in the atomic structure. The bulk properties of astatine are not known with any certainty. The chemical symbol for Sulfur is S. Sulfur is abundant, multivalent, and nonmetallic. The chemical symbol for Aluminum is Al. Tin is a post-transition metal in group 14 of the periodic table. Sulfur is a chemical element with atomic number 16 which means there are 16 protons and 16 electrons in the atomic structure. Polonium is a chemical element with atomic number 84 which means there are 84 protons and 84 electrons in the atomic structure. The chemical symbol for Einsteinium is Es. Antimony compounds have been known since ancient times and were powdered for use as medicine and cosmetics, often known by the Arabic name, kohl. As far as californium uses in everyday life, californium is also being used in … 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. The unit of measure for mass is the atomic mass unit (amu). The name xenon for this gas comes from the Greek word ξένον [xenon], neuter singular form of ξένος [xenos], meaning ‘foreign(er)’, ‘strange(r)’, or ‘guest’. It is occasionally found in native form as elemental crystals. 2) You may not distribute or commercially exploit the content, especially on another website. Its boiling point is the lowest among all the elements. Thorium metal is silvery and tarnishes black when exposed to air, forming the dioxide. Silicon is a hard and brittle crystalline solid with a blue-grey metallic lustre, it is a tetravalent metalloid and semiconductor. Zinc is a chemical element with atomic number 30 which means there are 30 protons and 30 electrons in the atomic structure. Californium bromide (CfBr 2) Californium chloride (CfCl 3) Californium fluoride (CfF 3) Californium iodide (CfI 2) Interesting facts: Californium was discovered by bombarding curium with alpha particles. 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. There are twenty known isotopes of californium, with atomic masses ranging from 237 to 256 . 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. Potassium is a chemical element with atomic number 19 which means there are 19 protons and 19 electrons in the atomic structure. Platinum is used in catalytic converters, laboratory equipment, electrical contacts and electrodes, platinum resistance thermometers, dentistry equipment, and jewelry. Zirconium is a chemical element with atomic number 40 which means there are 40 protons and 40 electrons in the atomic structure. Its extreme rarity in the Earth’s crust, comparable to that of platinum. The chemical symbol for Lutetium is Lu. Germanium is a chemical element with atomic number 32 which means there are 32 protons and 32 electrons in the atomic structure. Gadolinium is a chemical element with atomic number 64 which means there are 64 protons and 64 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. The chemical symbol for Argon is Ar. Gallium is a chemical element with atomic number 31 which means there are 31 protons and 31 electrons in the atomic structure. The chemical symbol for Boron is B. The chemical symbol for Tellurium is Te. Strontium is a chemical element with atomic number 38 which means there are 38 protons and 38 electrons in the atomic structure. The chemical symbol for Radon is Rn. Cadmium is a soft, bluish-white metal is chemically similar to the two other stable metals in group 12, zinc and mercury. Tellurium is far more common in the universe as a whole than on Earth. Californium is an artificial element, and thus a standard atomic weight cannot be given. For example, the neutron number of uranium-238 is 238-92=146. Neutron Moisture Meter. Fermium is a member of the actinide series. Palladium is a chemical element with atomic number 46 which means there are 46 protons and 46 electrons in the atomic structure. Atomic Mass of Californium Atomic mass of Californium is 251 u. Atomic mass of Cf = 252. Aluminium is a silvery-white, soft, nonmagnetic, ductile metal in the boron group. Because of its closed-shell electron configuration, its density and melting and boiling points differ significantly from those of most other lanthanides. Terbium is a chemical element with atomic number 65 which means there are 65 protons and 65 electrons in the atomic structure. The atomic mass is the mass of an atom. Neodymium is a chemical element with atomic number 60 which means there are 60 protons and 60 electrons in the atomic structure. The electron configuration of californium is [Rn] 5f107s2. The chemical symbol for Helium is He. Californium is a chemical element with atomic number 98 which means there are 98 protons and 98 electrons in the atomic structure. Natural boron consists primarily of two stable isotopes, 11B (80.1%) and 10B (19.9%). Lead is a chemical element with atomic number 82 which means there are 82 protons and 82 electrons in the atomic structure. Entire website is based on our own personal perspectives, and do not represent the views of any company of nuclear industry. 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. Thorium is a naturally-occurring element and it is estimated to be about three times more abundant than uranium. Hassium is a chemical element with symbol Hs and atomic number 108. Atomic number of unknown element = [(252 + 1) - (136 + 3)] = 114. 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. Lead is widely used as a gamma shield. The unit of measure for mass is the atomic mass unit (amu). Californium-245 is an alpha emitter with half-life 44 minutes. al. This equilibrium also known as “samarium 149 reservoir”, since all of this promethium must undergo a decay to samarium. The chemical symbol for Berkelium is Bk. Under standard conditions, it is the lightest metal and the lightest solid element. It readily forms hard, stable carbides in alloys, and for this reason most of world production of the element (about 80%) is used in steel alloys, including high-strength alloys and superalloys. All of its isotopes are radioactive. Uses of Californium: Californium is available only in very small quanities so its uses are limited, however, it is used in nuclear research as a source of fission fragments. Praseodymium is a chemical element with atomic number 59 which means there are 59 protons and 59 electrons in the atomic structure. Tin is a chemical element with atomic number 50 which means there are 50 protons and 50 electrons in the atomic structure. Tellurium is a brittle, mildly toxic, rare, silver-white metalloid. The chemical symbol for Fermium is Fm. Lead is soft and malleable, and has a relatively low melting point. Density is defined as the mass per unit volume. Major advantage of lead shield is in its compactness due to its higher density. Main purpose of this project is to help the public learn some interesting and important information about chemical elements, ionizing radiation, thermal engineering, reactor physics and nuclear energy. Nitrogen is a chemical element with atomic number 7 which means there are 7 protons and 7 electrons in the atomic structure. Cerium is the second element in the lanthanide series. In the 1970s, the price of californium-252 was $10 per microgram. Neon is a colorless, odorless, inert monatomic gas under standard conditions, with about two-thirds the density of air. Actinium is a chemical element with atomic number 89 which means there are 89 protons and 89 electrons in the atomic structure. Nobelium is the tenth transuranic element and is the penultimate member of the actinide series. It occurs on Earth as the decay product of various heavier elements. Titanium is a lustrous transition metal with a silver color, low density, and high strength. Atomic mass of Californium is 251 u. The total number of neutrons in the nucleus of an atom is called the neutron number of the atom and is given the symbol N. Neutron number plus atomic number equals atomic mass number: N+Z=A. It is obtained chiefly from the mineral cassiterite, which contains tin dioxide. Zirconium is mainly used as a refractory and opacifier, although small amounts are used as an alloying agent for its strong resistance to corrosion. We assume no responsibility for consequences which may arise from the use of information from this website. If the formula used in calculating molar mass is the molecular formula, the formula weight computed is the molecular weight. 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