dubnium$523856$ - ορισμός. Τι είναι το dubnium$523856$
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Τι (ποιος) είναι dubnium$523856$ - ορισμός

ISOTOPES OF THE SYNTHETIC ELEMENT DUBNIUM
Dubnium-255; Dubnium-256; Dubnium-257; Dubnium-258; Dubnium-259; Dubnium-260; Dubnium-261; Dubnium-262; Dubnium-263; Dubnium-264; Dubnium-265; Dubnium-266; Dubnium-267; Dubnium-268; Dubnium-269; Dubnium-270; Isotopes of hahnium; Dubnium isotopes; Dubnium isotope
  • This is the currently suggested decay level scheme for <sup>257</sup>Db<sup>g,m</sup> from the study performed in 2001 by Hessberger et al. at GSI

Isotopes of dubnium         
Dubnium (105Db) is a synthetic element, thus a standard atomic weight cannot be given. Like all synthetic elements, it has no stable isotopes.
dubnium         
  • Relativistic (solid line) and nonrelativistic (dashed line) radial distribution of the 7s valence electrons in dubnium.
  • (''n''-1)d}} orbitals and their spin–orbit splitting for the group 5 elements.
  • doi=10.1007/978-3-319-00047-3_6}}</ref>
  • Relativistic (rel) and nonrelativistic (nr) values of the effective charge (Q<sub>M</sub>) and overlap population (OP) in MCl<sub>5</sub>, where M = V, Nb, Ta, and Db
  • access-date=October 9, 2017}}</ref>
CHEMICAL ELEMENT WITH THE ATOMIC NUMBER OF 105
Unnilpentium; Element 105; Hahnium; Eka-Tantalum; Eka-tantalum; Dubnadium; User:Double sharp/Dubnium; Db (element); Ha (element); History of dubnium
['d?bn??m]
¦ noun the chemical element of atomic number 105, a very unstable element made by high-energy atomic collisions. (Symbol: Db)
Origin
1990s: mod. L., from Dubna in Russia, site of the Joint Nuclear Institute.
Dubnium         
  • Relativistic (solid line) and nonrelativistic (dashed line) radial distribution of the 7s valence electrons in dubnium.
  • (''n''-1)d}} orbitals and their spin–orbit splitting for the group 5 elements.
  • doi=10.1007/978-3-319-00047-3_6}}</ref>
  • Relativistic (rel) and nonrelativistic (nr) values of the effective charge (Q<sub>M</sub>) and overlap population (OP) in MCl<sub>5</sub>, where M = V, Nb, Ta, and Db
  • access-date=October 9, 2017}}</ref>
CHEMICAL ELEMENT WITH THE ATOMIC NUMBER OF 105
Unnilpentium; Element 105; Hahnium; Eka-Tantalum; Eka-tantalum; Dubnadium; User:Double sharp/Dubnium; Db (element); Ha (element); History of dubnium
Dubnium is a synthetic chemical element with the symbol Db and atomic number 105. It is highly radioactive: the most stable known isotope, dubnium-268, has a half-life of about 28 hours.

Βικιπαίδεια

Isotopes of dubnium

Dubnium (105Db) is a synthetic element, thus a standard atomic weight cannot be given. Like all synthetic elements, it has no stable isotopes. The first isotope to be synthesized was 261Db in 1968. The 13 known radioisotopes are from 255Db to 270Db, and 1–3 isomers. The longest-lived known isotope is 268Db with a half-life of 16 hours.