Periodic table of the elements
HassiumMeitneriumDarmstadtium
109
Mt
Meitnerium
(276)
2
8
18
32
32
15
2
109
Mt
Meitnerium
(276)
2
8
18
32
32
15
2
General
NameMeitnerium
SymbolMt
Number109
Chemical seriesTransition elements
Group / Period9 / 7
Blockd-block
CAS registry number54038-01-6

Meitnerium is a radioactive element

Physical properties
Statesolid
Density g/cm3
Melting point
Boiling point
Critical point

Atomic properties
Atomic Weight(276) g/mol
Crystal structure
Electronegativity
Atomic radius
Atomic radius (calculated)
Electron configuration[Rn] 5f14 6d7 7s2
Electrons per shell2, 8, 18, 32, 32, 15, 2
Number of protons109
Number of neutrons159

Other languages
SpanishMeitnerio
PortugueseMeitnério
FrenchMeitnérium
GermanMeitnerium
ItalianMeitnerio
RussianМейтнерий
PolishMeitner
Chinese
Arabicمايتنريوم
TurkishMeitneriyum
DutchMeitnerium


Periodic table of the elements
HassiumMeitneriumDarmstadtium