Isotopes of meitnerium

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

[edit] 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

[edit] 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.

[edit] References


Isotopes of hassium Isotopes of meitnerium Isotopes of darmstadtium
Index to isotope pages