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
