Californium. 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. You can print the list of elements by hitting the print button below. It is a grey or silvery white metal, and its density is greater than the density of lead. The measure of an elements atoms. What is the family of Californuim in? In its elemental form, californium's CAS number is 7440-71-3. 252 Cf (2.645-year half-life) is a very strong neutron emitter and is thus extremely radioactive and harmful (one microgram spontaneously emits 170 million neutrons per minute). Scandium (Sc) and yttrium (Y) are always included; the spaces below yttrium are either occupied by lanthanum (La) and actinium (Ac), or by lutetium (Lu) and lawrencium (Lr), with the former option more common. Californium is in the actinide group/family, and is considered a metallic. To list the elements order by group and period, click on the table headers. Group 3 is a group of elements in the periodic table.This group, like other d-block groups, should contain four elements, but it is not agreed what elements belong in the group. The radius of an elements ion. Notable characteristics. Californium (IPA: /ˌkalifɔː(r)niəm/) is a chemical element in the periodic table that has the symbol Cf and atomic number 98. Up to date, curated data provided by Mathematica's ElementData function … It decays releasing free neutrons that serve a variety of purposes such as: Neutrons to start nuclear fission reactions. Californium is found often in mineral mining and medical treatments. Common Uses List of elements of the periodic table by group and period including the chemical symbol and the atomic number. Atomic weight of Californium is 251 u or g/mol. it is also used in the treatment of cancers and analysers of coal. Element Praseodymium (Pr), Group 19, Atomic Number 59, f-block, Mass 140.908. Californium is a Block F, Group 3, Period 7 element. Not occurring in nature, californium (as the isotope californium-245) was discovered (1950) by American chemists Stanley G. Thompson, Kenneth Street, Jr., Albert Ghiorso, and Glenn T. Californium ek chemical element hae, jiske chemical symbol Cf, atomic number 98 aur aomic mass 251 hae . Californium is a metal, that is a solid at room temperature, with 98 protons and it belongs to the actinide group. Californium (Cf), synthetic chemical element of the actinoid series of the periodic table, atomic number 98. Twenty isotopes have been distinguished, of which the most used isotopes are Cf-249, Cf-251, and Cf-252. Californium Element: Californium is a chemical element belonging to the 7 th period or actinide series of the periodic table. It is also useful as a neutron sorce for activation analysis to detect gold or silver. Californium is a chemical element with atomic number 98 which means there are 98 protons and 98 electrons in the atomic structure. Melting point of Californium is 900 °C and its the boiling point is 1472 °C. Mass Number of Californium. Below is a list of Creative Californium slogans for chemistry assignments, science projects & project presentations. Californium is located at position 98 on the periodic table. Electronic configuration: 1s 2 2s 2 2p 6 3s 2 3p 6 3d 10 4s 2 4p 6 4d 10 5s 2 5p 6 4f 14 5d 10 6s 2 6p 6 5f 10 6d 0 7s 2 >> Back to key information about the element It was named for California and the University of California at Berkeley, where it was discovered in 1950 by a team of researchers including Albert Ghiorso, Glenn T. Seaborg, Kenneth Street, Jr., and Stanley G. Thompson using the Berkeley cyclotron.Its atomic weight is 251. A sample of the metal itself has not been produced yet because its compounds resist reduction. Californium is a chemical element with symbol Cf and atomic number 98. Atomic Radius of Californium (pm): 295 What is Ionic Radius? Californium Electronic configuration. What is atomic radius? List of Elements by Group and Period. Californium. The number of electrons in each of californium's shells is 2, 8, 18, 32, 28, 8, 2 and its electron configuration is [Rn] 5f 10 7s 2. The element was first made in 1950 at the University of California Radiation Laboratory in Berkeley, by bombarding curium with alpha particles. It is expected to be readily attacked by air, steam and acids and not by alkalis. Californium is a chemical element of unknown appearance, probably silver-white or gray metallic with atomic number 98. The chemical symbol for Californium is Cf . To unlock this lesson you must be a Study.com Member. Atomic mass of Californium is 251 u. It has silvery metallic luster and slowly tarnishes on exposure to air at room temperature. 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