Dubnium

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Dubnium, 105Db
Dubnium
Pípè
Ìhànsójúunknown, probably silvery, white or metallic gray
nọ́mbà ìsújọ[268]
Dubnium ní orí tábìlì àyè
Hydrogen Helium
Lithium Beryllium Boron Carbon Nitrogen Oxygen Fluorine Neon
Sodium Magnesium Aluminium Silicon Phosphorus Sulfur Chlorine Argon
Potassium Calcium Scandium Titanium Vanadium Chromium Manganese Iron Cobalt Nickel Copper Zinc Gallium Germanium Arsenic Selenium Bromine Krypton
Rubidium Strontium Yttrium Zirconium Niobium Molybdenum Technetium Ruthenium Rhodium Palladium Silver Cadmium Indium Tin Antimony Tellurium Iodine Xenon
Caesium Barium Lanthanum Cerium Praseodymium Neodymium Promethium Samarium Europium Gadolinium Terbium Dysprosium Holmium Erbium Thulium Ytterbium Lutetium Hafnium Tantalum Tungsten Rhenium Osmium Iridium Platinum Gold Mercury (element) Thallium Lead Bismuth Polonium Astatine Radon
Francium Radium Actinium Thorium Protactinium Uranium Neptunium Plutonium Americium Curium Berkelium Californium Einsteinium Fermium Mendelevium Nobelium Lawrencium Rutherfordium Dubnium Seaborgium Bohrium Hassium Meitnerium Darmstadtium Roentgenium Copernicium Nihonium Flerovium Moscovium Livermorium Tennessine Oganesson
Ta

Db

(Upp)
rutherfordiumdubniumseaborgium
Nọ́mbà átọ̀mù (Z)105
Ẹgbẹ́group 5
Àyèàyè 7
Àdìpọ̀Àdìpọ̀-d
Ẹ̀ka ẹ́límẹ́ntì  Transition metal
Ìtò ẹ̀lẹ́ktrọ́nù[Rn] 5f14 6d3 7s2[3]
Iye ẹ̀lẹ́ktrọ́nù lórí ìpele kọ̀ọ̀kan2, 8, 18, 32, 32, 11, 2
(predicted)
Àwọn ohun ìní ara
Ìfarahàn at STPSolid
Kíki (near r.t.)unknown g/cm3
Atomic properties
Oxidation states(+3), (+4), +5[3][4] Àdàkọ:Infobox element/symbol-to-oxidation-state/comment
Atomic radiuscalculated: unknown pm
Covalent radiusunknown pm
Other properties
Natural occurrencesynthetic
Crystal structure ​unknown
CAS Number53850-35-4
Main isotopes of dubnium
Iso­tope Abun­dance Half-life (t1/2) Decay mode Pro­duct
270Db syn ~23.1 h SF
268Db syn 16-32 h SF
ε ? 268Rf
267Db syn 1.2 h SF
266Db syn 22 m ε 266Rf
263Db syn 27 s 56% SF
41% α 8.36 259Lr
3% ε 263mRf
262Db syn 34 s 67% α 8.66,8.45 258Lr
33% SF
261Db syn 1.8 s α 8.93 257Lr
260Db syn 1.5 s α 9.13,9.08,9.05 256Lr
259Db syn 0.5 s α 9.47 255Lr
258Db syn 4.4 s 67% α 9.17,9.08,9.01 254Lr
33% ε 258Rf
257mDb syn 0.76 s α 9.16 253Lr
257gDb syn 1.50 s α 9.07,8.97 253Lr
256Db syn 1.6 s 70% α 9.12,9.08,9.01,8.89 253Lr
30% ε 256Rf
Àdàkọ:Category-inline
| references


Itokasi[àtúnṣe | àtúnṣe àmìọ̀rọ̀]

  1. "Dubnium". Merriam-Webster (in Èdè Gẹ̀ẹ́sì). Retrieved March 24, 2018. 
  2. "Dubnium". Oxford Dictionaries: English. Retrieved March 24, 2018. 
  3. 3.0 3.1 Àṣìṣe ìtọ́kasí: Invalid <ref> tag; no text was provided for refs named Haire
  4. Àṣìṣe ìtọ́kasí: Invalid <ref> tag; no text was provided for refs named BFricke