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Isotopes of meitnerium



Meitnerium (Mt) has no stable isotopes. A standard atomic mass cannot be given.

Additional recommended knowledge

Meitnerium has also been called eka-iridium.

Table

nuclide
symbol
Z(p) N(n)  
isotopic mass (u)
 
half-life nuclear
spin
representative
isotopic
composition
(mole fraction)
range of natural
variation
(mole fraction)
excitation energy
265Mt 109 156 265.13615(50)# 2# ms
266Mt 109 157 266.13730(37)# 1.2(4) ms
266mMt 1230(80) keV 6(3) ms
267Mt 109 158 267.13731(58)# 10# ms
268Mt 109 159 268.13873(34)# 21(+8-5) ms 5+#,6+#
268mMt 0+X keV 0.07(+10-3) s
269Mt 109 160 269.13906(59)# 200# ms
270Mt 109 161 270.14066(58)# 2# s
271Mt 109 162 271.14114(61)# 5# s
272Mt 109 163 272.14374(52)# 10# s
273Mt 109 164 273.14491(55)# 20# s
274Mt 109 165 274.14749(60)# 20# s
275Mt 109 166 275.14865(64)# 9.7(+460-44) ms
276Mt 109 167 276.15116(73)# 0.72(+87-25) s
277Mt 109 168 277.15242(95)# 1# min
278Mt 109 169 278.15481(90)# 30# min
279Mt 109 170 279.15619(77)# 6# min

Notes

  • Values marked # are not purely derived from experimental data, but at least partly from systematic trends. Spins with weak assignment arguments are enclosed in parentheses.
  • Uncertainties are given in concise form in parentheses after the corresponding last digits. Uncertainty values denote one standard deviation, except isotopic composition and standard atomic mass from IUPAC which use expanded uncertainties.

References

  • Isotope masses from Ame2003 Atomic Mass Evaluation by G. Audi, A.H. Wapstra, C. Thibault, J. Blachot and O. Bersillon in Nuclear Physics A729 (2003).
  • Isotopic compositions and standard atomic masses from Atomic weights of the elements. Review 2000 (IUPAC Technical Report). Pure Appl. Chem. Vol. 75, No. 6, pp. 683-800, (2003) and Atomic Weights Revised (2005).
  • Half-life, spin, and isomer data selected from these sources. Editing notes on this article's talk page.
    • Audi, Bersillon, Blachot, Wapstra. The Nubase2003 evaluation of nuclear and decay properties, Nuc. Phys. A 729, pp. 3-128 (2003).
    • National Nuclear Data Center, Brookhaven National Laboratory. Information extracted from the NuDat 2.1 database (retrieved Sept. 2005).
    • David R. Lide (ed.), Norman E. Holden in CRC Handbook of Chemistry and Physics, 85th Edition, online version. CRC Press. Boca Raton, Florida (2005). Section 11, Table of the Isotopes.


Isotopes of hassium Isotopes of meitnerium Isotopes of darmstadtium
Index to isotope pages
 
This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Isotopes_of_meitnerium". A list of authors is available in Wikipedia.
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