Meitnerium is a chemical element with symbol Mt and atomic number 109. It is an extremely radioactive synthetic element (an element not found in nature that can be created in a laboratory). The most stable known isotope, meitnerium-278, has a half-life of 7.6 seconds.
109
Atomic Number
278 u
Atomic Mass
null K
Melting Point
null K
Boiling Point
37.4 g/cm³
Density
null Å
Atomic Radius
null Å
Covalent Radius
null eV
First Ionization Energy
7
Number of Shells
2, 8, 18, 32, 32, 15, 2
Electron Shell Occupations