Dubnium Element in Periodic Table | Atomic Number Atomic Mass

Dubnium

Dubnium Element:

Synthetic chemical element Dubnium is highly radioactive transuranium element. Dubnium does not occur naturally and it is created artificially in the laboratory by bombarding californium-249 with nitrogen-15 nuclei. Its atomic number is 105 and represented by the symbol Db. In the periodic table it is a d-block transition metal and a member of group 5, period 7. It is placed  under vanadium, niobium, and tantalum in the group 5. Dubnium has seven known isotopes. 268Db is the most stable isotope, which has a half-life of about 32 hours.

Uses Of Dubnium Element:

  • Only small amounts of dubnium have ever been produced and its isotopes have very short half-lives. For this reason, at present it is only used in scientific research.

Dubnium

Dubnium Element Information:

Discovery year: (1970)

Discovered by:independently by the University of California and the Joint Institute

For Nuclear Research

Atomic number: 105

Relative atomic mass: [268]

Electron configuration: [Rn] 5f14 6d3 7s2

Block: d-block

Other elements in the same block:

Scandium, Titanium, Vanadium, Chromium, Manganese, Iron, Cobalt, Nickel, Copper, Zinc, Yttrium, Zirconium, Niobium, Molybdenum, Technetium, Ruthenium, Rhodium, Palladium, Silver, Cadmium, LanthanumHafnium, Tantalum, Tungsten, Rhenium, Osmium, Iridium, Platinum, Gold, Mercury, Actinium, Rutherfordium, Seaborgium, Bohrium, Hassium, Meitnerium, Darmstadtium, Roentgenium and  Copernicium are the elements in the same block.

Period: period 7

Other elements in the same period:

Francium, Radium, Actinium, Thorium, Protactinium, Uranium, Neptunium, Plutonium, Americium, Curium, Berkelium, Californium, Einsteinium, Fermium, Mendelevium, Nobelium, Lawrencium, Rutherfordium, Seaborgium, Bohrium, Hassium, Meitnerium, Darmstadtium, Roentgenium, Copernicium, Nihonium, Flerovium, Moscovium, Livermorium, Tennessine and Oganesson.

Group: group 5

Other elements in the same group:

Vanadium, Niobium and Tantalum are the elements in the same group.

Other elements in the same orbital:

Rutherfordium, Seaborgium, Bohrium, Hassium, Meitnerium, Darmstadtium, Roentgenium and Copernicium are the elements in the same orbital.

Allotropes: none

Key isotopes: 268Db 

Melting point: unknown

Boiling point: unknown

Element category: transition metal

Density (g cm−3): 29.3

CAS number: 53850-35-4 

Color:-

You can know detailed information for each element,

Hydrogen, HeliumLithiumBerylliumBoronCarbonNitrogenOxygenFluorine,  Neon , SodiumMagnesiumAluminiumSiliconPhosphorusSulfurChlorineArgon, PotassiumCalciumScandiumTitaniumVanadiumChromiumManganeseIronCobaltNickelCopperZincGalliumGermaniumArsenicSeleniumBromine, Krypton,  Rubidium, StrontiumYttriumZirconiumNiobiumMolybdenumTechnetiumRutheniumRhodiumPalladiumSilverCadmiumIndiumTinAntimonyTelluriumIodine, Xenon,  Caesium, BariumLanthanum,  CeriumPraseodymiumNeodymiumPromethiumSamariumEuropiumGadoliniumTerbiumDysprosiumHolmiumErbiumThuliumYtterbiumLutetiumHafniumTantalumTungstenRheniumOsmiumIridiumPlatinumGoldMercuryThalliumLeadBismuthPoloniumAstatine, Radon,  Francium, RadiumActiniumThoriumProtactiniumUraniumNeptuniumPlutoniumAmericiumCuriumBerkeliumCaliforniumEinsteiniumFermiumMendeleviumNobeliumLawrenciumRutherfordiumDubniumSeaborgiumBohriumHassiumMeitneriumDarmstadtiumRoentgeniumCoperniciumNihoniumFleroviumMoscoviumLivermoriumTennessine, Oganesson.

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