Meitnerium (Mt)
Meitnerium is the 109th element in the periodic table and has a symbol of Mt and atomic number of 109. It has an atomic weight of (276) and a mass number of 265. Meitnerium has one hundred nine protons and one hundred fifty-six neutrons in its nucleus, and one hundred nine electrons in seven shells. It is located in group nine, period seven and block d of the periodic table. Half-life of approximately 5 ms. The creation of this element demonstrated that fusion techniques could indeed be used to make new, heavy nuclei. Made and identified by physicists of the Heavy Ion Research Laboratory, Darmstadt, West Germany in 1982. Named in honor of Lise Meitner, the Austrian physicist.
| Atomic Number | 109 |
|---|---|
| Atomic Weight | 276 |
| Mass Number | 265 |
| Group | 9 |
|---|---|
| Period | 7 |
| Block | d |
| Protons | 109 p+ |
|---|---|
| Neutrons | 156 n0 |
| Electrons | 109 e- |
Physical Properties
| Atomic Radius | |
|---|---|
| Molar Volume | |
| Covalent Radius | |
| Metallic Radius | |
| Ionic Radius | |
| Crystal Radius | |
| Van der Waals Radius | |
| Density |
Chemical Properties
| Energy | |
|---|---|
| Proton Affinity | |
| Electron Affinity | |
| Ionization Energy | |
| Heat of Vaporization | |
| Heat of Fusion | |
| Heat of Formation | |
| Electrons | |
| Electron Shells | 2, 8, 18, 32, 32, 15, 2 |
 | |
| Valence Electrons | 2 ⓘ |
 | |
| Electron Configuration | [Rn] 5f14 6d7 7s2ⓘ 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 5f14 6d7 7s2 |
  | |
| Oxidation States | |
| Electronegativity | |
| Electrophilicity Index | |
| States of Matter | |
| Phase | {ERROR}|
| Gas Phase | |
| Boiling Point | |
| Melting Point | |
| Critical Pressure | |
| Critical Temperature | |
| Triple Point | |
| Visual | |
Meitnerium is a Black. Mt has a Jmol of #eb0026. | |
| Color | Black
|
| Appearance | |
| Refractive Index | |
| Thermodynamic Properties | |
| Thermal Conductivity | |
| Thermal Expansion | |
| Molar Heat Capacity | |
| Specific Heat Capacity | |
| Heat Capacity Ratio (Adiabatic Index) | |
| Electrical Properties | |
| Type | |
| Electrical Conductivity | |
| Electrical Resistivity | |
| Superconducting Point | |
| Magnetism | |
| Type | |
| Magnetic Susceptibility (Mass) | |
| Magnetic Susceptibility (Molar) | |
| Magnetic Susceptibility (Volume) | |
| Magnetic Ordering | |
| Curie Point | |
| Neel Point | |
| Structure | |
The lattice angles of Meitnerium is . | |
| Crystal Structure | {ERROR} |
| Lattice Constant | |
| Lattice Angles | |
| Mechanical Properties | |
| Hardness | |
| Bulk Modulus | |
| Shear Modulus | |
| Young's Modulus | |
| Poisson Ratio | |
| Speed of Sound | |
| Classification | |
The CAS Group of Meitnerium is VIIIA. The IUPAC Group of Mt is VIII. The Mendeleev Number of Element 109 is 66. The Goldschmidt Class of Meitnerium (Mt) is synthetic. | |
| Category | Actinides, Transition metals |
| CAS Group | VIIIA |
| IUPAC Group | VIII |
| Glawe Number | |
| Mendeleev Number | 66 |
| Pettifor Number | |
| Geochemical Class | |
| Goldschmidt Class | synthetic |
Other
The Dipole Polarizability of Meitnerium is 34 plus or minus 3 a₀. The Allotropes of Mt is . The Quantum Numbers of Element 109 is 4F9/2. The Space Group of Meitnerium (Mt) is ().
| Gas Basicity | |
|---|---|
| Dipole Polarizability | |
| C6 Dispersion Coefficient | |
| Allotropes | |
| Neutron Cross Section | |
| Neutron Mass Absorption | |
| Quantum Numbers | 4F9/2 |
| Space Group | () |
Isotopes of Meitnerium
| Stable Isotopes | 0 |
|---|---|
| Unstable Isotopes | 18 |
| Natural Isotopes | 0 |
265Mt
| Mass Number | 265 |
|---|---|
| Neutron Number | 156 |
| Relative Atomic Mass | |
| G-Factor | |
| Abundance | |
| Radioactivity | ☢️ Radioactive |
| Half Life | |
| Spin | |
| Quadrupole Moment | |
| Discovery Year | |
| Parity |
| Decay Mode | Intensity |
|---|---|
| α (α emission) |
266Mt
| Mass Number | 266 |
|---|---|
| Neutron Number | 157 |
| Relative Atomic Mass | |
| G-Factor | |
| Abundance | |
| Radioactivity | ☢️ Radioactive |
| Half Life | 2 ± 0.5 ms
|
| Spin | |
| Quadrupole Moment | |
| Discovery Year | 1982 |
| Parity |
| Decay Mode | Intensity |
|---|---|
| α (α emission) | 100% |
| SF (spontaneous fission) |
267Mt
| Mass Number | 267 |
|---|---|
| Neutron Number | 158 |
| Relative Atomic Mass | |
| G-Factor | |
| Abundance | |
| Radioactivity | ☢️ Radioactive |
| Half Life | |
| Spin | |
| Quadrupole Moment | |
| Discovery Year | |
| Parity |
| Decay Mode | Intensity |
|---|---|
| α (α emission) |
268Mt
| Mass Number | 268 |
|---|---|
| Neutron Number | 159 |
| Relative Atomic Mass | |
| G-Factor | |
| Abundance | |
| Radioactivity | ☢️ Radioactive |
| Half Life | 23 ± 7 ms
|
| Spin | |
| Quadrupole Moment | |
| Discovery Year | 1995 |
| Parity |
| Decay Mode | Intensity |
|---|---|
| α (α emission) | 100% |
269Mt
| Mass Number | 269 |
|---|---|
| Neutron Number | 160 |
| Relative Atomic Mass | |
| G-Factor | |
| Abundance | |
| Radioactivity | ☢️ Radioactive |
| Half Life | |
| Spin | |
| Quadrupole Moment | |
| Discovery Year | |
| Parity |
| Decay Mode | Intensity |
|---|---|
| α (α emission) |
270Mt
| Mass Number | 270 |
|---|---|
| Neutron Number | 161 |
| Relative Atomic Mass | |
| G-Factor | |
| Abundance | |
| Radioactivity | ☢️ Radioactive |
| Half Life | 800 ± 400 ms
|
| Spin | |
| Quadrupole Moment | |
| Discovery Year | 2004 |
| Parity |
| Decay Mode | Intensity |
|---|---|
| α (α emission) | 100% |
271Mt
| Mass Number | 271 |
|---|---|
| Neutron Number | 162 |
| Relative Atomic Mass | |
| G-Factor | |
| Abundance | |
| Radioactivity | ☢️ Radioactive |
| Half Life | |
| Spin | |
| Quadrupole Moment | |
| Discovery Year | |
| Parity |
| Decay Mode | Intensity |
|---|---|
| α (α emission) |
272Mt
| Mass Number | 272 |
|---|---|
| Neutron Number | 163 |
| Relative Atomic Mass | |
| G-Factor | |
| Abundance | |
| Radioactivity | ☢️ Radioactive |
| Half Life | |
| Spin | |
| Quadrupole Moment | |
| Discovery Year | |
| Parity |
| Decay Mode | Intensity |
|---|---|
| α (α emission) | |
| SF (spontaneous fission) |
273Mt
| Mass Number | 273 |
|---|---|
| Neutron Number | 164 |
| Relative Atomic Mass | |
| G-Factor | |
| Abundance | |
| Radioactivity | ☢️ Radioactive |
| Half Life | |
| Spin | |
| Quadrupole Moment | |
| Discovery Year | |
| Parity |
| Decay Mode | Intensity |
|---|---|
| α (α emission) | |
| SF (spontaneous fission) |
274Mt
| Mass Number | 274 |
|---|---|
| Neutron Number | 165 |
| Relative Atomic Mass | |
| G-Factor | |
| Abundance | |
| Radioactivity | ☢️ Radioactive |
| Half Life | 850 ± 540 ms
|
| Spin | |
| Quadrupole Moment | |
| Discovery Year | 2007 |
| Parity |
| Decay Mode | Intensity |
|---|---|
| α (α emission) | 100% |
275Mt
| Mass Number | 275 |
|---|---|
| Neutron Number | 166 |
| Relative Atomic Mass | |
| G-Factor | |
| Abundance | |
| Radioactivity | ☢️ Radioactive |
| Half Life | 31 ± 17 ms
|
| Spin | |
| Quadrupole Moment | |
| Discovery Year | 2004 |
| Parity |
| Decay Mode | Intensity |
|---|---|
| α (α emission) | 100% |
276Mt
| Mass Number | 276 |
|---|---|
| Neutron Number | 167 |
| Relative Atomic Mass | |
| G-Factor | |
| Abundance | |
| Radioactivity | ☢️ Radioactive |
| Half Life | 700 ± 80 ms
|
| Spin | |
| Quadrupole Moment | |
| Discovery Year | 2004 |
| Parity |
| Decay Mode | Intensity |
|---|---|
| α (α emission) | 100% |
277Mt
| Mass Number | 277 |
|---|---|
| Neutron Number | 168 |
| Relative Atomic Mass | |
| G-Factor | |
| Abundance | |
| Radioactivity | ☢️ Radioactive |
| Half Life | 9 ± 6 s
|
| Spin | |
| Quadrupole Moment | |
| Discovery Year | 2013 |
| Parity |
| Decay Mode | Intensity |
|---|---|
| SF (spontaneous fission) | 100% |
| α (α emission) |
278Mt
| Mass Number | 278 |
|---|---|
| Neutron Number | 169 |
| Relative Atomic Mass | |
| G-Factor | |
| Abundance | |
| Radioactivity | ☢️ Radioactive |
| Half Life | 6 ± 3 s
|
| Spin | |
| Quadrupole Moment | |
| Discovery Year | 2010 |
| Parity |
| Decay Mode | Intensity |
|---|---|
| α (α emission) | 100% |
279Mt
| Mass Number | 279 |
|---|---|
| Neutron Number | 170 |
| Relative Atomic Mass | |
| G-Factor | |
| Abundance | |
| Radioactivity | ☢️ Radioactive |
| Half Life | |
| Spin | |
| Quadrupole Moment | |
| Discovery Year | |
| Parity |
| Decay Mode | Intensity |
|---|---|
| α (α emission) | |
| SF (spontaneous fission) |
280Mt
| Mass Number | 280 |
|---|---|
| Neutron Number | 171 |
| Relative Atomic Mass | |
| G-Factor | |
| Abundance | |
| Radioactivity | ☢️ Radioactive |
| Half Life | |
| Spin | |
| Quadrupole Moment | |
| Discovery Year | |
| Parity |
| Decay Mode | Intensity |
|---|---|
| α (α emission) | |
| SF (spontaneous fission) |
281Mt
| Mass Number | 281 |
|---|---|
| Neutron Number | 172 |
| Relative Atomic Mass | |
| G-Factor | |
| Abundance | |
| Radioactivity | ☢️ Radioactive |
| Half Life | |
| Spin | |
| Quadrupole Moment | |
| Discovery Year | |
| Parity |
| Decay Mode | Intensity |
|---|---|
| α (α emission) | |
| SF (spontaneous fission) |
282Mt
| Mass Number | 282 |
|---|---|
| Neutron Number | 173 |
| Relative Atomic Mass | |
| G-Factor | |
| Abundance | |
| Radioactivity | ☢️ Radioactive |
| Half Life | |
| Spin | |
| Quadrupole Moment | |
| Discovery Year | 2016 |
| Parity |
| Decay Mode | Intensity |
|---|---|
| α (α emission) | 100% |
| SF (spontaneous fission) |
History
Meitnerium was first synthesized in 1982 by a German research team led by Peter Armbruster and Gottfried Münzenberg at the Institute for Heavy Ion Research (Gesellschaft für Schwerionenforschung) in Darmstadt. The team bombarded a target of bismuth-209 with accelerated nuclei of iron-58 and detected a single atom of the isotope meitnerium-266. Named after Lise Meitner, the Austrian physicist
| Discoverers | Heavy Ion Research Laboratory (HIRL) |
|---|---|
| Discovery Location | Germany |
| Discovery Year | 1982 |
| Etymology (Name Origin) | Named in honor of Lise Mietner |
| Pronunciation | MITE-ner-i-um (English) |
Meitnerium is harmful due to its radioactivity
Meitnerium has 7 isotopes whose half-lives are known
Uses
Meitnerium is used for scientific research purposes only. It has no significant commercial applications.
Sources
Obtained by bombarding bismuth-209 with iron-58.
| Abundance | |
|---|---|
| Abundance in Earth's crust | |
| Natural Abundance (Oceans) | |
| Natural Abundance (Human Body) | 0 %
|
| Natural Abundance (Meteor) | 0 %
|
| Natural Abundance (Sun) | 0 %
|
| Abundance in Universe | 0 %
|
Nuclear Screening Constants
Also Known As
- Mt
- element 109
- unnilennium
- Une
Translations
- Norwegian Bokmålmeitnerium
- Frenchmeitnérium
- Norwegian Nynorskmeitnerium
- Danishmeitnerium
- Swedishmeitnerium
- Dutchmeitnerium
- GermanMeitnerium
- Spanishmeitnerio
- Italianmeitnerio
- Hungarianmeitnerium
- Finnishmeitnerium
- Portuguesemeitnério
- Amharicሜይትኔሪየም
- AragoneseMeitnerio
- Arabicمايتنريوم
- AzerbaijaniMeytnerium
- BelarusianМейтнерый
- Bulgarianмайтнерий
- Banglaমাইটনেরিয়াম
- Bosnianmajtnerij
- Catalanmeitneri
- CorsicanMeitneriu
- Czechmeitnerium
- ChuvashМейтнери
- WelshMeitneriwm
- Greekμαϊτνέριο
- Esperantomejtnerio
- Estonianmeitneerium
- Basquemeitnerio
- Persianمایتنریم
- FriulianMeitneri
- IrishMeitniriam
- Galicianmeitnerio
- ManxMeitnerium
- Hakka Chinesemeitnerium
- Hebrewמייטנריום
- Fiji HindiMeitnerium
- Croatianmajtnerij
- Armenianմայտներիում
- Interlinguameitnerium
- Indonesianmeitnerium
- Idomeitnerio
- Japaneseマイトネリウム
- Lojbanjinmrmaitneri
- JavaneseMeitnerium
- Kannadaಮೀಟ್ನೇರಿಯಮ್
- Korean마이트너륨
- KurdishMeitneryûm
- KomiМейтнерий
- Latinmeitnerium
- LuxembourgishMeitnerium
- LigurianMeitnerio
- Lithuanianmeitneris
- Latvianmeitnērijs
- Malayalamമെയ്റ്റ്നേറിയം
- Western MariМейтнерий
- MalayMeitnerium
- Polishmeitner
- QuechuaMeitneryu
- Romanianmeitneriu
- Russianмейтнерий
- Sicilianmeitneriu
- Serbo-CroatianMeitnerij
- Slovakmeitnérium
- Slovenianmajtnerij
- Serbianмајтнеријум
- Saterland FrisianMeitnerium
- Thaiไมต์เนเรียม
- Turkishmeitneriyum
- Uyghurمېيتنېرىي
- Ukrainianмейтнерій
- Urdumeitnerium
- VenetianMeitnèrio
- VepsMeitnerii
- Vietnamesemeitneri
- WarayMeitneryo
- KalmykМейтнериүм
- YorubaMeitneriomu
- Chinese鿏
- BretonMeitneriom
- CebuanoMeitneryo
- Macedonianмајтнериум
- Central Kurdishمایتنەریۆم
- Gujaratiમાઈટનિરીયમ
- Odiaମିଟ୍ନେରିଅମ
- Occitanmeitnèri
- Tatarмейтнерий
- Western Panjabiمیٹرنیم
- Tamilமெய்ட்னீரியம்
- Hindiमेइट्नेरियम
- SomaliMeitneriyaam
- KazakhМейтнерий
- Albanianmeitneriumi
- Newariमेइट्नेरियम
- Cantonese䥑
- Belarusian (Taraskievica orthography)Майтнэр
- Chinese (China)鿏
- Chinese (Simplified)鿏
- Chinese (Traditional)䥑
- Chinese (Hong Kong SAR China)䥑
- Chinese (Taiwan)䥑
- AromanianMeitneriu
- KyrgyzМейтнерий
- Sanskritमेइट्नेरियम
- Maltesemeitnerju
- Nepaliमेइट्नेरियम
- Scottish GaelicMeitnerium
- Paliमेइट्नेरियम
- Bhojpuriमेइट्नेरियम
- Teluguమీట్నీరియం
- cdoMeitnerium
- Min Nan ChineseMeitnerium
- Marathiमाइट्नरियम
- LimburgishMeitnerium
- UzbekMeytneriy
- Asturianmeitneriu
- English (United Kingdom)meitnerium
- Chinese (Macao SAR China)䥑
- Chinese (Malaysia)鿏
- Chinese (Singapore)鿏
- Portuguese (Brazil)meitnério
- Literary Chinese䥑
- TagalogMeitneryo
- kbpMayɩnɛrɩyɔm
- Mongolianмейтнери
- AfrikaansMeitnerium
- Lingua Franca Novamaitnerio
- Northern FrisianMeitneerium
- Volapükmätnerin
- Low GermanMeitnerium
- Icelandicmeitnerín
- TajikМейтнерий
- SwahiliMeitneri
- SardinianMeitnèriu
- Wu Chinese鿏
- Burmeseမိုက်ဒ်နီရီယမ်
- Moroccan Arabicمايتنيريوم
- BashkirМейтнерий
- Egyptian Arabicمايتنريوم
- Pashtoمېټېنېټريوم
- CornishMeitneriom
- BalineseMeitnérium
- Georgianმეიტნერიუმი
