WebElements Periodic Table of the Elements | Nobelium

Nobelium: the essentials

Nobelium is a radioactive "rare earth metal" named after Alfred Nobel who discovered dynamite.

Table: basic information about and classifications of nobelium.
Name: Nobelium Symbol: No Atomic number: 102 Atomic weight: [ 259 ] Standard state: presumably a solid at 298 K CAS Registry ID: 10028-14-5	Group in periodic table: Group name: Actinoid Period in periodic table: 7 (actinoid) Block in periodic table: f-block Colour: unknown, but probably metallic and silvery white or grey in appearance Classification: Metallic

Nobelium: historical information

Nobelium was discovered by Nobel Institute for Physics and later by Seaborg and others at Berkeley, California, USA at 1958 in Sweden, USA. Origin of name: named after Alfred "Nobel", Swedish chemist who discovered dynamite, and founder of the Nobel Prizes.

A team working in Stockholm reported in 1957 an isotope whose atomic number is 102. They made this isotope by bombardment of ²⁴⁴Cm with ¹³C ions. They named the element nobelium after Alfred Nobel. In 1958 a group at Berkeley, California, USA reported that they were unable to reproduce this work, findings agreed by a Russian group at Dubna. However an authenticated discovery of nobelium was made in 1958 by Seaborg and others at Berkeley, California, USA. Since then a number of isotopes with mass numbers in the range 250-259 have been made.

Nobelium: physical properties

Melting point: about 1100 [or 827 °C (1521 °F)] K
Boiling point: no data K
Density of solid: no data kg m^-3

Ground state electron configuration: [Rn].5f¹⁴.7s²
Shell structure: 2.8.18.32.32.8.2
Term symbol: ¹S₀
Pauling electronegativity: 1.3 (Pauling units)
First ionisation energy: 642 kJ mol^-1
Second ionisation energy: no data kJ mol^-1

Isolation

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Tm	Yb	Lu
Md	No	Lr

Nobelium	Nobélium
Nobelium	Nobelium
Nobelio	Nobelio
Nobelium	Nobélio

Nobelium
- Essential data: names, symbol, atomic number, and atomic weight; block, period, and group in periodic table; description; standard state; registry number; and isolation
- History: meaning of name; discovery; and history of the element
- Uses
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Nobelium around us
- Geology: Abundance of elements in the universe; the sun; meteorites; Earth's crust; oceans; and streams
- Biology: Abundance in humans; biological role; and health hazards)
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Chemistry and compounds
- Compounds: halides, oxides, sulfides, hydrides, and complexes; lattice energies; and reduction potentials
- Reactions of nobelium: reactions of nobelium with air; water; halogens; acids; and bases
- Electronegativities: Pauling; Sanderson; Allred Rochow; Mulliken-Jaffe; and Allen
- Bond enthalpies of diatomic species
- Lattice energies
Element properties
- Physics properties: Boiling point; melting point; density; molar volume; thermal conductivity; and electrical resistivity; bulk modulus; critical temperature; superconductivity temperature; hardness (mineralogical, Brinell, and Vickers); linear expansion coefficient; Poisson's ratio; reflectivity; refractive index; rigidity modulus; Young's modulus; velocity of sound
- Crystal structure
- Thermochemistry: enthalpies of atomization, fusion, and vaporization; thermodynamic properties
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Atom properties
- Electron shell properties: Electronic configuration; term symbol; electron affinity; ionization energies; and atomic spectra
- Atom sizes: atomic radius; Shannon and Pauling ionic radii; covalent radius; metallic radius; element bond length; and Van der Waals radius
- Atomic orbital properties: effective nuclear charge; electron binding energies; and valence orbital radii maxima
Nuclear properties
- Isotopes: isotope abundances; radioactive isotopes; isotope masses; nuclear spins; and nuclear magnetic moment
- NMR properties: frequencies; isotopes; magnetogyric ratios; quadrupole moments; receptivities; and relative sensitivities
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1 H																															2 He
3 Li	4 Be																									5 B	6 C	7 N	8 O	9 F	10 Ne
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19 K	20 Ca															21 Sc	22 Ti	23 V	24 Cr	25 Mn	26 Fe	27 Co	28 Ni	29 Cu	30 Zn	31 Ga	32 Ge	33 As	34 Se	35 Br	36 Kr
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Nobelium

Nobelium: the essentials

Nobelium: historical information

Nobelium: physical properties

Nobelium: orbital properties

Isolation

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