Template:Infobox fermium

Fermium,  ₁₀₀Fm

General properties
Pronunciation	Template:Infobox element/pronunciation
Standard atomic weight (Ar, standard)	Template:Infobox element/standard atomic weight
Mass number	Template:Infobox element/symbol-to-most-stable-isotope (most stable isotope)
Fermium in the periodic table
Template:Infobox element/periodic table
Atomic number (Z)	100
Group	Template:Infobox element/group
Period	period 7
Block	f-block
Element category	Template:Infobox element/category format
Electron configuration	[Rn] 5f12 7s2
Electrons per shell	2, 8, 18, 32, 30, 8, 2
Physical properties
Phase at STP	solid (predicted)
Melting point	1800 K ​(1527 °C, ​2781 °F) (predicted)
Density (near r.t.)	9.7(1) g/cm3 (predicted)
Atomic properties
Oxidation states	Template:Infobox element/symbol-to-oxidation-state
Electronegativity	Pauling scale: 1.3
[[Ionization energy|Template:Engvar energies]]	1st: 627 kJ/mol (estimated)
Template:Infobox element/spectral lines
Other properties
Crystal structure	​Template:Infobox element/crystal structure Template:Infobox element/crystal structure (predicted)
CAS Number	7440-72-4
History
Naming	after Enrico Fermi
Discovery	Lawrence Berkeley National Laboratory (1952)
Main isotopes of fermium
Template:Infobox element/isotopes table