Nobelium

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Nobelium,  102No
General properties
Mass nummer 259 (most stable isotope)
Nobelium in the periodic cairt
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 Airn Cobalt Nickel Capper Zinc Gallium Germanium Arsenic Selenium Bromine Krypton
Rubidium Strontium Yttrium Zirconium Niobium Molybdenum Technetium Ruthenium Rhodium Palladium Siller (element) 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 Mercur (element) Thallium Leid (element) 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 Ununtrium Flerovium Ununpentium Livermorium Ununseptium Ununoctium
Yb

No

(Upq)
mendeleviumnobeliumlawrencium
Atomic nummer (Z) 102
Group group n/a
Period period 7
Element category   actinide
Block f-block
Electron confeeguration [Rn] 5f14 7s2
Electrons per shell
2, 8, 18, 32, 32, 8, 2
Pheesical properties
Phase (at STP) solit (predictit)[1]
Meltin pynt 1100 K ​(827 °C, ​1521 °F) (predictit)[1]
Atomic properties
Oxidation states 2, 3
Electronegativity Pauling scale: 1.3 (predictit)[2]
Ionisation energies
  • 1st: 641.6 kJ/mol
  • 2nd: 1254.3 kJ/mol
  • 3rd: 2605.1 kJ/mol
  • (aw estimatit)
Miscellanea
CAS Nummer 10028-14-5
History
Namin after Alfred Nobel
Diskivery Jynt Institute for Nuclear Research (1966)
Main isotopes o nobelium
Iso­tope Abun­dance Hauf-life (t1/2) Decay mode Pro­duct
253No syn 1.62 min 80% α 249Fm
20% β+ 253Md
254No syn 51 s 90% α 250Fm
10% β+ 254Md
255No syn 3.1 min 61% α 251Fm
39% β+ 255Md
257No syn 25 s 99% α 253Fm
1% β+ 257Md 259No syn 58 min 75% α 255Fm
25% ε 259Md
10% SF
| references | in Wikidata

Nobelium is a synthetic chemical element wi seembol No an atomic nummer 102.

References[eedit | eedit soorce]

  1. 1.0 1.1 Lide, D. R., ed. (2003). CRC Handbook of Chemistry and Physics (84th ed.). Boca Raton (FL): CRC Press. ISBN 0-8493-0484-9. 
  2. J.A. Dean, ed. (1999). Lange's Handbook of Chemistry (15 ed.). McGraw-Hill. Section 4; Table 4.5, Electronegativities of the Elements.