Talk:Isotopes of mercury

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Neutron–proton ratio of ²⁰⁴Hg

It should be noted in the chart that ²⁰⁴Hg has the highest N/Z ratio of any known stable isotope at 1.55 (mentioned in the Wikipedia article Neutron–proton ratio). ²¹⁶Po has even higher N/Z ratio than ²⁰⁴Hg, but it is very unstable with respect to alpha decay, with a half-life of only 145 ms. 2A04:CEC0:11CD:6609:1C53:ACAC:ED4F:9F39 (talk) 23:26, 27 November 2023 (UTC)

If we're counting unstable isotopes, then probably a better comparison is ²³⁸U at 1.59. :) Double sharp (talk) 08:26, 13 December 2023 (UTC)

Possible alpha decay of several isotopes of mercury

²⁰³Hg through ²⁰⁶Hg are the only alpha-stable isotopes of mercury.

According to [1], ¹⁹²Hg (N = 112) and ¹⁹⁴Hg (N = 114) should respectively have a partial alpha decay half-life of at least 10¹¹ years and 10¹⁸ years. Note that the alpha decay energy of ¹⁹⁴Hg is 2.70 MeV, which is lower than 3.27 MeV of its alpha product ¹⁹⁰Pt and 2.82 MeV of its double alpha product ¹⁸⁶Os. Also ¹⁹²Hg has lower alpha decay energy than its daughter ¹⁸⁸Pt (3.38 MeV vs. 4.01 MeV).

According to [2], ¹⁹⁶Hg should have an alpha decay half-life at the order of 10³² years. Note that the alpha decay energy is 2.038 MeV, which is lower than 2.4239 MeV of its alpha product ¹⁹²Pt and 2.1432 MeV of its double alpha product ¹⁸⁸Os.

The alpha decay energy of ²⁰⁷Hg is only 984.3 keV, so alpha decay may be possible but with a very long partial half-life beyond imagination.

According to the link above, ²⁰⁸Hg (decay energy = 2.4002 MeV), ²¹⁰Hg and ²¹²Hg should respectively have an alpha decay half-life at the order of 10²² years, 10²⁶ years and 10²⁷ years. The alpha decay partial half-life of ²¹²Hg is 41 orders of magnitude longer than that of ²¹²Po despite having an energy 36.0786 MeV higher. 129.104.241.214 (talk) 21:44, 28 December 2023 (UTC)

The atomic masses of ^212-216Hg are certainly incorrect

According to the current data, are you trying to tell me that the beta decay energy of ²¹⁶Hg is 170 MeV? 129.104.241.231 (talk) 00:12, 18 September 2024 (UTC)

 Done All the masses are corrected with values from AME2020 II. Nucleus hydro elemon (talk) 07:26, 18 September 2024 (UTC)

Thanks a lot! 129.104.241.231 (talk) 11:26, 19 September 2024 (UTC)