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Dubnium

Statistics:

  • Name: Dubnium
  • Symbol: Db
  • Classification: Transition Metal
  • Atomic Number: 105
  • Atomic Mass: 262.1138 g/mol
  • Density: unknown
  • Melting: unknown
  • Boiling: unknown
  • Protons & Electrons:105
  • Neutrons:157
  • Discovered: 1970
  • Discovered By: Flerov

Electrons Per Energy Level:

  • Level 1: 2
  • Level 2: 8
  • Level 3: 18
  • Level 4: 32
  • Level 5: 32
  • Level 6: 11
  • Level 7: 2

Isotopes:

Isotope: Half-life

  • 258Db: 4.2 seconds

Brief Summary

Dubnium is a Transition Metal with the symbol 'Db' and contains 105 Protons & Electrons with 157 neutrons in the nucleus of the atom. Dubnium has an atomic mass of 262.1138 g/mol .

Dubnium was discovered by Flerov in 1970 and is named 'Dubnium' After Dubna, a city in Russia.

Some common usages for Dubnium: currently unknown.

Definitions and Notes

Density listed is at a temperature of 20°C.

Isotopes are forms of an element who have the same atomic number but different mass because they contain different number of neutrons.

Half-life is the time required for a quantity of a subject to fall to half of its current quantity.

MLA Citing Format

Dubnium :: Db :: 105 - Chemical Element. 22 Nov. 2008 <http://www.chemicalelement.com/element/dubnium.html>.

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