## More Chemistry

Isotope Nuclide | E | N | Atomic Mass [Nuclear Mass] {Mass Excess} | Spin I(h/2π) | Parent |
---|---|---|---|---|---|

1 | 2 | 3 | 4 | 5 | 6 |

Nihonium-278 | 278113Nh | 165 | 278.17073(24) u [278.1087513 u] {159.03397 MeV} | ||

Nihonium-279 | 279113Nh | 166 | |||

Nihonium-280 | 280113Nh | 167 | |||

Nihonium-281 | 281113Nh | 168 | |||

Nihonium-282 | 282113Nh | 169 | 282.17577(43) u [282.1137913 u] {163.7287 MeV} | ^{286}Mc | |

Nihonium-283 | 283113Nh | 170 | 283.17667(47) u [283.1146913 u] {164.56704 MeV} | ||

Nihonium-284 | 284113Nh | 171 | 284.17884(57) u [284.1168613 u] {166.58839 MeV} | ||

Nihonium-285 | 285113Nh | 172 | 285.18011(83) u [285.1181313 u] {167.77138 MeV} | ||

Nihonium-286 | 286113Nh | 173 | 286.18246(63) u [286.1204813 u] {169.9604 MeV} | ||

Nihonium-290 | 290113Nh | 177 | 290.19143(50) u [290.1294513 u] {178.3159 MeV} |

Isotope | Radioactive Decay | Extern | |||
---|---|---|---|---|---|

Half-life | Decay Mode | Probability | Energy | ||

7 | 8 | 9 | 10 | 11 | 12 |

Nh-278 | 1.4 ms | α → ^{274}Rg | 100 % | 11.993(79) MeV | AL |

Nh-279 | - unknown - | AL | |||

Nh-280 | - unknown - | AL | |||

Nh-281 | - unknown - | AL | |||

Nh-282 | 0.07(9) s | α → ^{278}RgSF ^{} | 100 % ? | 10.783(95) MeV | AL |

Nh-283 | 0.07 s | α ^{279}RgSF ^{}div | ≥ 75 % ≤ 25 % | 10.417(112) MeV | AL |

Nh-284 | 0.97 s | α → ^{280}Rg | 100 % | 10.280(38) MeV | AL |

Nh-285 | 0.93 s | α → ^{281}RgSF ^{}div | > 95 % < 5 % | 10.010(40) MeV | |

Nh-286 | 9.5 s | α → ^{282}RgSF ^{}div | 9.790(50) MeV | AL | |

Nh-290 | 2 s | α → ^{286}RgSF ^{}div | 9.38(10) MeV |

Notes (related to the columns):

1 - name of the nuclide, isotope.

2 - E: isotope symbol with mass number (superscript; number of nucleons) and atomic number (subscript; number of protons).

3 - *N*: number of neutrons.

4 - relative atomic mass of the Nihonium isotope (isotopic mass including electrons) and the mass of the atomic nucleus in square brackets (nuclear mass, nuclide mass without electrons), each related to ^{12}C = 12.00000 [2]. In addition, the mass excess is given in MeV.

5 - nuclear spin *I*, unit: h/2π.

6 - source nuclides: Possible, assumed or actual source nuclides (mother nuclides, parent nuclides). If applicable, the corresponding decay modes can be found in the data for the respective starting nuclide.

7 - isotope notation in short form.

8 - decay: half-live of the Nihonium isotope (a = years; ; d = days; h = hours; min = minutes; s = seconds).

9 - decay mode: type of decay into the respective daughter nuclides with n = neutron emission; p = proton emission; α = alpha decay; β^{-} = beta minus decay with electron emission; EC = electron capture; β^{+} = positron emission; ε = β^{+} and/or EC; Iso = isomeric transition; CD = cluster decay; SF = spontaneous decay.

10 - decay probability in percent (%).

11 - decay energy; Particle energy related to decay type.

12 - other information and notes: AL = Adopted Levels (link to external data [1]).

Miscellaneous:

()- Numbers in brackets: uncertainty to represent the spread of the reported value.

~ - Theoretical values or systematic trends.

- unlisted-: Nuclides that have already been mentioned in the literature but for some reason can no longer be found in the current nuclide tables because their discovery e.g. has not confirmed.

**Properties of the Nihonium nucleides**

[1] - NuDat: National Nuclear Data Center, Brookhaven National Laboratory, based on ENSDF and the Nuclear Wallet Cards.

[2] - G. Audi et. al.: The NUBASE evaluation of nuclear and decay properties. Nuclear Physics, (2003), DOI 10.1016/j.nuclphysa.2003.11.001.

[3] - Live Chart of Nuclides. Nuclear structure and decay data.

**Nihonium: NMR properties **

[4] - N. J. Stone: Table of nuclear magnetic dipole and electric quadrupole moments. Atomic Data and Nuclear Data Tables, (2005), DOI 10.1016/j.adt.2005.04.001.

[5] - Pekka Pyykkö: Year-2008 nuclear quadrupole moments. Molecular Physics, (2008), DOI 10.1080/00268970802018367.

[6] - Pekka Pyykkö: Year-2017 nuclear quadrupole moments. Molecular Physics, (2018), DOI 10.1080/00268976.2018.1426131.

[7] - N. J. Stone: Table of recommended nuclear magnetic dipole moments. IAEA, (2019).

**More sources:**

[8] - **Isotopic abundances, atomic weights and isotopic masses:** see respective keyword.

**Last update: **2022-12-12

**Perma link**: https://www.chemlin.org/chemical-elements/nihonium-isotopes.php

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