The other chalcogen elements are oxygen, sulfur, selenium, and tellurium. SYMBOL Po ATOMIC NUMBER 84 ATOMIC MASS 208.9824 FAMILY Group 16 (VIA) Chalcogen PRONUNCIATION puh-LO-nee-um Polonium is a relatively rare element. The pitchblende studied by the Curies contained only about...
of entropy values is less prone to error compared to extrapolation of enthalpies, since statistical mechanical models provide a physical basis for extrapolation (e.g., the Sackur-Tetrode equation predicts a dependence of the entropy S on the square root of the mass for a monoatomic gas). The...
Polonium is a chemical element with the symbol Po and atomic number 84, discovered in 1898 by Marie Skłodowska-Curie and Pierre Curie. A rare and highly radioactive metalloid,[1] polonium is chemically similar to bismuth[2] and tellurium, and it occurs in uranium ores. Polonium has been ...
It provides atomic mass, mass excess, nuclear binding energy, nucleon separation energies, Q-values, and nucleon residual interaction parameters for atomic nuclei of the isotope Po-202 (Polonium, atomic number Z = 84, mass number A = 202).Related documents Landolt-Brnstein Homepage Introduction ...
Atomic number: 84 Group numbers: 16 Period: 6 Electronic configuration: [Xe] 4f14 5d10 6s2 6p4 Formal oxidation number: +2 +4 Electronegativities: 2 Atomic radius / pm: 167.3 Relative atomic mass: -Polonium was discovered by Marie Sklodowska Curie and Pierre Curie (FR) in 1898. Named...
Polonium is a chemical element; it has symbol Po and atomic number 84. A rare and highly radioactive metal with no stable isotopes, polonium is a chalcogen and chemically similar to selenium and tellurium, though its metallic character resembles that of its horizontal neighbors in the periodic ...
It provides atomic mass, mass excess, nuclear binding energy, nucleon separation energies, Q-values, and nucleon residual interaction parameters for atomic nuclei of the isotope Po-280 (Polonium, atomic number Z = 84, mass number A = 280)....
Correlations of alpha-decay energies in terms of mass number and atomic number have been made for all of the alpha-emitting species now numbering over 100... Isadore,A Perlman,G Ghiorso,... - 《Lawrence Berkeley National Laboratory》 被引量: 26发表: 1949年 Alpha-decay half-lives of polo...
350Jper70kgpersonor350J=Number of disintegrations×Energy per disintegration The physical factors needed are the energy emitted per disintegration, the atomic mass, the physical half-life, the specific activity, and the conversions between Joules and MeV. The step by step approach some would take ...
CAS number 7440-08-6 [1] Position in the periodic table Group Period Block 16 [1] 6 [1] p [1] Lacation of Polonium in the Periodic Table Properties and Characteristics of Polonium General Properties Allotropes α-Po, β-Po [1] Atomic mass 209 u Relative atomic mass 209 [1] Physical...