Lead is a heavy metal that is denser than most common materials. The atomic mass is the mass of an atom. Its extreme rarity in the Earth’s crust, comparable to that of platinum. Note that, each element may contain more isotopes, therefore this resulting atomic mass is calculated from naturally-occuring isotopes and their abundance. Titanium is a chemical element with atomic number 22 which means there are 22 protons and 22 electrons in the atomic structure. Atomic Mass of Californium Atomic mass of Californium is 251 u. The chemical symbol for Lawrencium is Lr. 3. The chemical symbol for Einsteinium is Es. The chemical symbol for Curium is Cm. 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. Elemental sulfur is a bright yellow crystalline solid at room temperature. The chemical symbol for Tantalum is Ta. Palladium, platinum, rhodium, ruthenium, iridium and osmium form a group of elements referred to as the platinum group metals (PGMs). The unit of measure for mass is the atomic mass unit (amu). The chemical symbol for Boron is B. The commercial use of beryllium requires the use of appropriate dust control equipment and industrial controls at all times because of the toxicity of inhaled beryllium-containing dusts that can cause a chronic life-threatening allergic disease in some people called berylliosis. The chemical symbol for Bromine is Br. The standard SI unit is kilograms per cubic meter (kg/m3). Terbium is a chemical element with atomic number 65 which means there are 65 protons and 65 electrons in the atomic structure. It has remarkable resistance to corrosion, even at high temperatures, and is therefore considered a noble 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. Thallium is a soft gray post-transition metal is not found free in nature. There are over 100 different borate minerals, but the most common are: borax, kernite, ulexite etc. Europium is a chemical element with atomic number 63 which means there are 63 protons and 63 electrons in the atomic structure. Rhodium is a rare, silvery-white, hard, corrosion resistant and chemically inert transition metal. Chlorine is a chemical element with atomic number 17 which means there are 17 protons and 17 electrons in the atomic structure. Californium. Aluminium is a silvery-white, soft, nonmagnetic, ductile metal in the boron group. It is named after the University and the state of California. Arsenic occurs in many minerals, usually in combination with sulfur and metals, but also as a pure elemental crystal. It is the fourth most common element in the Earth’s crust. Sodium is an alkali metal, being in group 1 of the periodic table, because it has a single electron in its outer shell that it readily donates, creating a positively charged atom—the Na+ cation. Helium is a chemical element with atomic number 2 which means there are 2 protons and 2 electrons in the atomic structure. Atomic mass of Californium is 251 u. The chemical symbol for Zirconium is Zr. 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. The chemical symbol for Rhodium is Rh. Oxygen is a colourless, odourless reactive gas, the chemical element of atomic number 8 and the life-supporting component of the air. It is the fifth most abundant element in Earth’s crust and the third most abundant metal, after iron and aluminium. The chemical symbol for Nobelium is No. 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. It is a noble metal and a member of the platinum group. 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. Boiling point: Unknown 8. Its density is about 70% higher than that of lead, and slightly lower than that of gold or tungsten. Entire website is based on our own personal perspectives, and do not represent the views of any company of nuclear industry. 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. Atomic Mass of Californium. Significant concentrations of boron occur on the Earth in compounds known as the borate minerals. (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. In nuclear industry, especially natural and artificial samarium 149 has an important impact on the operation of a nuclear reactor. Californium metal becomes either ferromagnetic or ferromagnetic (acts like a magnet) below -251ºC and above -113ºC it exhibits paramagnetic characters by getting magnetised by external magnetic field. The chemical symbol for Astatine is At. The information contained in this website is for general information purposes only. 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. The ground state electronic configuration of neutral californium is [Rn].5f 10.7s 2 and the term symbol of californium is 5 I 8.. Californium: description Your user agent does not support the HTML5 Audio element. Therefore, we cannot determine the neutron number of uranium, for example. The chemical symbol for Carbon is C. It is nonmetallic and tetravalent—making four electrons available to form covalent chemical bonds. Gallium is a chemical element with atomic number 31 which means there are 31 protons and 31 electrons in the atomic structure. All isotopes of radium are highly radioactive, with the most stable isotope being radium-226. Bismuth is a chemical element with atomic number 83 which means there are 83 protons and 83 electrons in the atomic structure. The unit of measure for mass is the atomic mass unit (amu). Chemically, sulfur reacts with all elements except for gold, platinum, iridium, tellurium, and the noble gases. Arsenic is a metalloid. Europium is a moderately hard, silvery metal which readily oxidizes in air and water. Californium has an atomic mass of 251 u. Californium is a radioactive chemical element with the symbol Cf and atomic number 98.The element was first synthesized in 1950 at the Lawrence Berkeley National Laboratory (then the University of California Radiation Laboratory), by bombarding curium with alpha particles (helium-4 ions). Units of measure have been defined for mass and energy on the atomic scale to make measurements more convenient to express. Gold is a bright, slightly reddish yellow, dense, soft, malleable, and ductile metal. Antimony is a chemical element with atomic number 51 which means there are 51 protons and 51 electrons in the atomic structure. There are two reasons for the difference between mass number and isotopic mass, known as the mass defect: Note that, it was found the rest mass of an atomic nucleus is measurably smaller than the sum of the rest masses of its constituent protons, neutrons and electrons. Facts about Californium SYMBOL: Cf ATOMIC NUMBER: 98 ATOMIC MASS: 251.0796 FAMILY Actinide Transuranium element PRONUNCIATION: cal-uh-FOR-knee-um GROUP NUMBER: 3A PERIOD: 7 Noble gas configuration: [Rn] 5f107s2 The element californium does not have a Lewis Dot Structure or spins due to it not being a representative element. Tin is a post-transition metal in group 14 of the periodic table. Atomic Number: 98. Name: Californium. They can also be used […] Holmium is a relatively soft and malleable silvery-white metal. One atomic mass unit is equal to 1.66 x 10-24 grams. 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. Applications. Melting point: 1,652 F (900 C) 7. Germanium is a lustrous, hard, grayish-white metalloid in the carbon group, chemically similar to its group neighbors tin and silicon. Thorium is a naturally-occurring element and it is estimated to be about three times more abundant than uranium. Curium is a hard, dense, silvery metal with a relatively high melting point and boiling point for an actinide. Xenon is a chemical element with atomic number 54 which means there are 54 protons and 54 electrons in the atomic structure. It is a soft, silvery-white alkali metal. When we use data that are related to certain product, we use only data released by public relations departments and allowed for use. Cerium is the second element in the lanthanide series. Xenon is a colorless, dense, odorless noble gas found in the Earth’s atmosphere in trace amounts. Francium is an alkali metal, that has one valence electron. It is one of the least reactive chemical elements and is solid under standard conditions. The chemical symbol for Caesium is Cs. Selenium is a nonmetal with properties that are intermediate between the elements above and below in the periodic table, sulfur and tellurium, and also has similarities to arsenic. Manganese is a metal with important industrial metal alloy uses, particularly in stainless steels. Zinc is a chemical element with atomic number 30 which means there are 30 protons and 30 electrons in the atomic structure. 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. Neodymium is a soft silvery metal that tarnishes in air. Twenty isotopes ranging in atomic mass from 237 to 256 have been reported for californium however the existence of the isotopes with mass of 237 and 238 has not yet been confirmed. Tungsten is a chemical element with atomic number 74 which means there are 74 protons and 74 electrons in the atomic structure. Cerium is a soft, ductile and silvery-white metal that tarnishes when exposed to air, and it is soft enough to be cut with a knife. Its boiling point is the lowest among all the elements. 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 most probable fission fragment masses are around mass 95 (Krypton) and 137 (Barium). It is obtained chiefly from the mineral cassiterite, which contains tin dioxide. The chemical symbol for Neptunium is Np. Sodium is a soft, silvery-white, highly reactive metal. The chemical symbol for Ytterbium is Yb. Praseodymium is a chemical element with atomic number 59 which means there are 59 protons and 59 electrons in the atomic structure. Proper safeguards should be used in handling californium. Sulfur is a chemical element with atomic number 16 which means there are 16 protons and 16 electrons in the atomic structure. Lead is a chemical element with atomic number 82 which means there are 82 protons and 82 electrons in the atomic structure. Californium-245 is an alpha emitter with half-life 44 minutes. See also: Atomic Mass Number – Does it conserve in a nuclear reaction? References. Ruthenium is a chemical element with atomic number 44 which means there are 44 protons and 44 electrons in the atomic structure. Radon is a radioactive, colorless, odorless, tasteless noble gas. Atomic mass 10. The chemical symbol for Lanthanum is La. 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