109
Mt
Meitnerium
(278)
28183232152
#109
Meitnerium
unknown· Solid·278 u
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.
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Identity
- Symbol
- Mt
- Atomic Number
- 109
- Atomic Mass
- 278 u
- Category
- unknown
- Block
- d-block
- Period
- 7
- Group
- 9
- Year Discovered
- 1982 CE
- Discovered By
- Gesellschaft für Schwerionenforschung
- Named By
- Lise Meitner
Electrons
- Configuration
- *[Rn] 5f14 6d7 7s2
- Full Configuration
- 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 7s2 5f14 6d7
- Shells
- 2, 8, 18, 32, 32, 15, 2
- Electronegativity
- n/a
- Electron Affinity
- n/a
- Oxidation States
- 9, 8, 6, 4, 3, 1
Physical Properties
- State at
- Unknown
- Melting Point
- n/a
- Boiling Point
- n/a
- Density
- 37.4
- Crystal Structure
- n/a
- Magnetic Ordering
- n/a
Mechanical
Thermal & Electrical
Abundance
- Universe
- 0
- Sun
- 0
- Meteorite
- 0
- Earth's Crust
- 0
- Ocean
- 0
- Human Body
- 0