Element Meitnerium

Meitnerium ElementIt is an extremely radioactive synthetic element (an element not found in nature, but can be created in a laboratory).
Meitnerium is a synthetic chemical element with the symbol Mt and atomic number 109.
In the periodic table, meitnerium is a d-block transactinide element.
It is a member of the 7th period and is placed in the group 9 elements, although no chemical experiments have yet been carried out to confirm that it behaves as the heavier homologue to iridium in group 9 as the seventh member of the 6d series of transition metals.
Meitnerium is calculated to have similar properties to its lighter homologues, cobalt, rhodium, and iridium.

Names and Identifiers

Chemical Formula:Mt
CAS:54038-01-6
Molecular Weight:278.156  g/mol
EC Number :n/a
MDL Number:n/a
Color:unknown (presumably metallic/ silvery white/ gray)
Other Names:Meitnerio
PubChem CID:56951716
IUPAC Name:Meitnerium
Inchl:InChI=1S/Mt
InChI Key:VAJSJTKWMRUWBF-UHFFFAOYSA-N
Canonical SMILES:[Mt]
ICSC Number:n/a

Physical & Chemical Properties

Phase:Solid
Density:37.4 g/cm³
Boiling Point:n/a
Melting Point:n/a
Molecular Formula:Mt
Flash Point:n/a
Exact Mass:278

All meitnerium isotopes are extremely unstable and radioactive; in general, heavier isotopes are more stable than the lighter. The most stable known meitnerium isotope, 278Mt, is also the heaviest known

Radiosotope data

IsotopeMass/DaHalf-lifeMode of decayNuclear spinNuclear magnetic moment
265Mt266.1366
266Mt266.13764 (45)0.0034 sα to 262Bh; SF
267Mt267.1375
268Mt268.13880.070 sα to 264Bh
269Mt269.1391
270Mt270.1407
271Mt271.1412
275Mt2750.0097 sα to 271Bh
276Mt2760.72 sα to 272Bh

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