Meitnerium

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 Number109
Atomic Weight276
Mass Number265
Group9
Period7
Blockd
Protons109 p+
Neutrons156 n0
Electrons109 e-
Animated Bohr Model of Mt (Meitnerium)

Physical Properties

Atomic Radius
Molar Volume
Covalent Radius
129 pm
Metallic Radius
Ionic Radius
Crystal Radius
Van der Waals Radius
Density
37.4 g/cm³

Chemical Properties

Energy
Proton Affinity
Electron Affinity
Ionization Energy
Ionization Energies of Mt (Meitnerium)
Heat of Vaporization
Heat of Fusion
Heat of Formation
Electrons
Electron Shells2, 8, 18, 32, 32, 15, 2
Bohr Model: Mt (Meitnerium)
Valence Electrons2
Lewis Structure: Mt (Meitnerium)
Electron Configuration[Rn] 5f14 6d7 7s2
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 5f14 6d7 7s2
Enhanced Bohr Model of Mt (Meitnerium)
Orbital Diagram of Mt (Meitnerium)
Oxidation States
Electronegativity
Electrophilicity Index
States of Matter
PhaseSolid
Gas Phase
Boiling Point
Melting Point
Critical Pressure
Critical Temperature
Triple Point
Visual

Meitnerium is a Colorless. Mt has a Jmol of #eb0026.

Color
Colorless
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 ()
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.

CategoryTransition metals, Transition metals
CAS GroupVIIIA
IUPAC GroupVIII
Glawe Number
Mendeleev Number66
Pettifor Number
Geochemical Class
Goldschmidt Classsynthetic

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
34 ± 3 a₀
C6 Dispersion Coefficient
Allotropes
Neutron Cross Section
Neutron Mass Absorption
Quantum Numbers4F9/2
Space Group ()

Isotopes of Meitnerium

Stable Isotopes0
Unstable Isotopes18
Natural Isotopes0

265Mt

Mass Number265
Neutron Number156
Relative Atomic Mass
265.135937 ± 0.000471 Da
G-Factor
Abundance
Radioactivity☢️ Radioactive
Half Life
Spin
Quadrupole Moment
Discovery Year
Parity

Decay ModeIntensity
α (α emission)

266Mt

Mass Number266
Neutron Number157
Relative Atomic Mass
266.137062253 ± 0.000103568 Da
G-Factor
Abundance
Radioactivity☢️ Radioactive
Half Life
2 ± 0.5 ms
Spin
Quadrupole Moment
Discovery Year1982
Parity

Decay ModeIntensity
α (α emission)100%
SF (spontaneous fission)

267Mt

Mass Number267
Neutron Number158
Relative Atomic Mass
267.137189 ± 0.00054 Da
G-Factor
Abundance
Radioactivity☢️ Radioactive
Half Life
Spin
Quadrupole Moment
Discovery Year
Parity

Decay ModeIntensity
α (α emission)

268Mt

Mass Number268
Neutron Number159
Relative Atomic Mass
268.138649 ± 0.00025 Da
G-Factor
Abundance
Radioactivity☢️ Radioactive
Half Life
23 ± 7 ms
Spin
Quadrupole Moment
Discovery Year1995
Parity

Decay ModeIntensity
α (α emission)100%

269Mt

Mass Number269
Neutron Number160
Relative Atomic Mass
269.138809 ± 0.000335 Da
G-Factor
Abundance
Radioactivity☢️ Radioactive
Half Life
Spin
Quadrupole Moment
Discovery Year
Parity

Decay ModeIntensity
α (α emission)

270Mt

Mass Number270
Neutron Number161
Relative Atomic Mass
270.140322 ± 0.000205 Da
G-Factor
Abundance
Radioactivity☢️ Radioactive
Half Life
800 ± 400 ms
Spin
Quadrupole Moment
Discovery Year2004
Parity

Decay ModeIntensity
α (α emission)100%

271Mt

Mass Number271
Neutron Number162
Relative Atomic Mass
271.140741 ± 0.000354 Da
G-Factor
Abundance
Radioactivity☢️ Radioactive
Half Life
Spin
Quadrupole Moment
Discovery Year
Parity

Decay ModeIntensity
α (α emission)

272Mt

Mass Number272
Neutron Number163
Relative Atomic Mass
272.143298 ± 0.000521 Da
G-Factor
Abundance
Radioactivity☢️ Radioactive
Half Life
Spin
Quadrupole Moment
Discovery Year
Parity

Decay ModeIntensity
α (α emission)
SF (spontaneous fission)

273Mt

Mass Number273
Neutron Number164
Relative Atomic Mass
273.144695 ± 0.000455 Da
G-Factor
Abundance
Radioactivity☢️ Radioactive
Half Life
Spin
Quadrupole Moment
Discovery Year
Parity

Decay ModeIntensity
α (α emission)
SF (spontaneous fission)

274Mt

Mass Number274
Neutron Number165
Relative Atomic Mass
274.147343 ± 0.000404 Da
G-Factor
Abundance
Radioactivity☢️ Radioactive
Half Life
850 ± 540 ms
Spin
Quadrupole Moment
Discovery Year2007
Parity

Decay ModeIntensity
α (α emission)100%

275Mt

Mass Number275
Neutron Number166
Relative Atomic Mass
275.148972 ± 0.000416 Da
G-Factor
Abundance
Radioactivity☢️ Radioactive
Half Life
31 ± 17 ms
Spin
Quadrupole Moment
Discovery Year2004
Parity

Decay ModeIntensity
α (α emission)100%

276Mt

Mass Number276
Neutron Number167
Relative Atomic Mass
276.151705 ± 0.000571 Da
G-Factor
Abundance
Radioactivity☢️ Radioactive
Half Life
700 ± 80 ms
Spin
Quadrupole Moment
Discovery Year2004
Parity

Decay ModeIntensity
α (α emission)100%

277Mt

Mass Number277
Neutron Number168
Relative Atomic Mass
277.153525 ± 0.000711 Da
G-Factor
Abundance
Radioactivity☢️ Radioactive
Half Life
9 ± 6 s
Spin
Quadrupole Moment
Discovery Year2013
Parity

Decay ModeIntensity
SF (spontaneous fission)100%
α (α emission)

278Mt

Mass Number278
Neutron Number169
Relative Atomic Mass
278.156487 ± 0.000621 Da
G-Factor
Abundance
Radioactivity☢️ Radioactive
Half Life
6 ± 3 s
Spin
Quadrupole Moment
Discovery Year2010
Parity

Decay ModeIntensity
α (α emission)100%

279Mt

Mass Number279
Neutron Number170
Relative Atomic Mass
279.158439 ± 0.00072 Da
G-Factor
Abundance
Radioactivity☢️ Radioactive
Half Life
Spin
Quadrupole Moment
Discovery Year
Parity

Decay ModeIntensity
α (α emission)
SF (spontaneous fission)

280Mt

Mass Number280
Neutron Number171
Relative Atomic Mass
280.161579 ± 0.000644 Da
G-Factor
Abundance
Radioactivity☢️ Radioactive
Half Life
Spin
Quadrupole Moment
Discovery Year
Parity

Decay ModeIntensity
α (α emission)
SF (spontaneous fission)

281Mt

Mass Number281
Neutron Number172
Relative Atomic Mass
281.163608 ± 0.000644 Da
G-Factor
Abundance
Radioactivity☢️ Radioactive
Half Life
Spin
Quadrupole Moment
Discovery Year
Parity

Decay ModeIntensity
α (α emission)
SF (spontaneous fission)

282Mt

Mass Number282
Neutron Number173
Relative Atomic Mass
282.166888 ± 0.00048 Da
G-Factor
Abundance
Radioactivity☢️ Radioactive
Half Life
Spin
Quadrupole Moment
Discovery Year2016
Parity

Decay ModeIntensity
α (α emission)100%
SF (spontaneous fission)
Electron shell 109 Meitnerium

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

DiscoverersHeavy Ion Research Laboratory (HIRL)
Discovery LocationGermany
Discovery Year1982
Etymology (Name Origin)Named in honor of Lise Mietner
PronunciationMITE-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
  • BretonMeitneriom
  • CebuanoMeitneryo
  • Macedonianмајтнериум
  • Central Kurdishمایتنەریۆم
  • Gujaratiમાઈટનિરીયમ
  • Odiaମିଟ୍ନେରିଅମ
  • Occitanmeitnèri
  • Tatarмейтнерий
  • Western Panjabiمیٹرنیم
  • Tamilமெய்ட்னீரியம்
  • Hindiमेइट्नेरियम
  • SomaliMeitneriyaam
  • KazakhМейтнерий
  • Albanianmeitneriumi
  • Newariमेइट्नेरियम
  • Cantonese
  • Belarusian (Taraskievica orthography)Майтнэр
  • Chinese (China)
  • Chinese (Simplified)
  • Chinese (Traditional)
  • Chinese (Hong Kong SAR China)
  • Chinese (Taiwan)
  • 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)
  • Chinese (Malaysia)
  • Chinese (Singapore)
  • Portuguese (Brazil)meitnério
  • Literary Chinese
  • TagalogMeitneryo
  • kbpMayɩnɛrɩyɔm
  • Mongolianмейтнери
  • AfrikaansMeitnerium
  • Lingua Franca Novamaitnerio
  • Northern FrisianMeitneerium
  • Volapükmätnerin
  • Low GermanMeitnerium
  • Icelandicmeitnerín
  • TajikМейтнерий
  • SwahiliMeitneri
  • SardinianMeitnèriu
  • Wu Chinese
  • Burmeseမိုက်ဒ်နီရီယမ်
  • Moroccan Arabicمايتنيريوم
  • BashkirМейтнерий
  • Egyptian Arabicمايتنريوم
  • Pashtoمېټېنېټريوم
  • CornishMeitneriom
  • BalineseMeitnérium
  • Georgianმეიტნერიუმი