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Nobelium (No)
Atomic number: 102 · Category: actinide · Group 3 · Period 7 · Phase: Solid
Nobelium is a synthetic chemical element with symbol No and atomic number 102. It is named in honor of Alfred Nobel, the inventor of dynamite and benefactor of science. A radioactive metal, it is the tenth transuranic element and is the penultimate member of the actinide series.
Block: f
CPK color:#bd0d87
Electronic structure
Electron configuration: 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 7s2 5f14
Configuration (semantic): [Rn] 5f14 7s2
Shells: 2, 8, 18, 32, 32, 8, 2
Electronegativity (Pauling): 1.3
Electron affinity: -223.22
Ionization energies: 642
Periodic position
Group: 3
Period: 7
xpos: 16
ypos: 10
Spectral/Bohr images
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3D Model