Template:Infobox nobelium

Nobelium,  ₁₀₂No

General properties
Name, symbol	nobelium, No
Pronunciation	i/noʊˈbɛliəm/ or /noʊˈbiːliəm/ noh-BEL-ee-əm or noh-BEE-lee-əm
Nobelium in the periodic table
Yb ↑ No ↓ (Upq) mendelevium ← nobelium → lawrencium
Atomic number (Z)	102
Group, block	group n/a, f-block
Period	period 7
Element category	actinide
Standard atomic weight (Ar)	[259]
Electron configuration	[Rn] 5f14 7s2
per shell	2, 8, 18, 32, 32, 8, 2
Physical properties
Phase	solid (predicted)
Melting point	1100 K ​(827 °C, ​1521 °F) (predicted)
Atomic properties
Oxidation states	2, 3
Electronegativity	Pauling scale: 1.3 (predicted)
Ionization energies	1st: 641.6 kJ/mol 2nd: 1254.3 kJ/mol 3rd: 2605.1 kJ/mol (all estimated)
Miscellanea
CAS Number	10028-14-5
History
Naming	after Alfred Nobel
Discovery	Joint Institute for Nuclear Research (1966)
Most stable isotopes of nobelium
iso NA half-life DM DE (MeV) DP 253No syn 1.62 min 80% α 8.14, 8.06, 8.04, 8.01 249Fm 20% β+ 253Md 254No syn 51 s 90% α 250Fm 10% β+ 254Md 255No syn 3.1 min 61% α 8.12, 8.08, 7.93 251Fm 39% β+ 2.012 255Md 257No syn 25 s 99% α 8.32, 8.22 253Fm 1% β+ 257Md 259No syn 58 min 75% α 7.69, 7.61, 7.53.... 255Fm 25% ε 259Md 10% SF

References

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