Roentgenium (Rg) – Oganesson (Og) Batch 111-118

  • Atomic Number: 111
  • Symbol: Rg
  • Isotopes:
    • $^{272}$Rg: Half-life is 1.5 ms, decays via Alpha Decay.
    • $^{273}$Rg: Half-life is 1.8 ms, decays via Alpha Decay.
    • $^{274}$Rg: Half-life is 1.2 ms, decays via Alpha Decay.
    • $^{278}$Rg: Half-life is 4.2 s, decays via Alpha Decay.
    • $^{279}$Rg: Half-life is 0.8 s, decays via Alpha Decay.
    • $^{280}$Rg: Half-life is 3.6 s, decays via Alpha Decay.

Copernicium (Cn)

  • Atomic Number: 112
  • Symbol: Cn
  • Isotopes:
    • $^{277}$Cn: Half-life is 0.24 ms, decays via Spontaneous Fission.
    • $^{281}$Cn: Half-life is 3.5 s, decays via Alpha Decay.
    • $^{282}$Cn: Half-life is 0.8 ms, decays via Spontaneous Fission.
    • $^{283}$Cn: Half-life is 4.0 s, decays via Alpha Decay.
    • $^{284}$Cn: Half-life is 97 ms, decays via Alpha Decay.
    • $^{285}$Cn: Half-life is 29 s, decays via Alpha Decay and Spontaneous Fission.
    • $^{286}$Cn: Half-life is 8.4 s, decays via Spontaneous Fission and Alpha Decay.

Nihonium (Nh)

  • Atomic Number: 113
  • Symbol: Nh
  • Isotopes:
    • $^{278}$Nh: Half-life is 1.2 ms, decays via Alpha Decay.
    • $^{282}$Nh: Half-life is 110 ms, decays via Alpha Decay.
    • $^{283}$Nh: Half-life is 150 ms, decays via Alpha Decay.
    • $^{284}$Nh: Half-life is 0.9 s, decays via Alpha Decay.
    • $^{285}$Nh: Half-life is 5.5 s, decays via Alpha Decay and Spontaneous Fission.
    • $^{286}$Nh: Half-life is 20 s, decays via Alpha Decay.

Flerovium (Fl)

  • Atomic Number: 114
  • Symbol: Fl
  • Isotopes:
    • $^{284}$Fl: Half-life is 2.5 ms, decays via Spontaneous Fission.
    • $^{285}$Fl: Half-life is 4.9 s, decays via Alpha Decay.
    • $^{286}$Fl: Half-life is 0.16 s, decays via Spontaneous Fission.
    • $^{287}$Fl: Half-life is 0.51 s, decays via Alpha Decay and Spontaneous Fission.
    • $^{288}$Fl: Half-life is 0.8 s, decays via Alpha Decay.
    • $^{289}$Fl: Half-life is 2.6 s, decays via Alpha Decay.
    • $^{290}$Fl: Half-life is 20 s, decays via Alpha Decay.
    • $^{291}$Fl: Half-life is 2.1 s, decays via Alpha Decay.

Moscovium (Mc)

  • Atomic Number: 115
  • Symbol: Mc
  • Isotopes:
    • $^{286}$Mc: Half-life is 20 ms, decays via Alpha Decay.
    • $^{287}$Mc: Half-life is 1.0 s, decays via Alpha Decay.
    • $^{288}$Mc: Half-life is 16 ms, decays via Alpha Decay.
    • $^{289}$Mc: Half-life is 42 ms, decays via Alpha Decay.
    • $^{290}$Mc: Half-life is 0.54 s, decays via Alpha Decay.
    • $^{291}$Mc: Half-life is 0.6 s, decays via Alpha Decay.

Livermorium (Lv)

  • Atomic Number: 116
  • Symbol: Lv
  • Isotopes:
    • $^{290}$Lv: Half-life is 20 ms, decays via Alpha Decay.
    • $^{291}$Lv: Half-life is 60 ms, decays via Alpha Decay.
    • $^{292}$Lv: Half-life is 18 ms, decays via Alpha Decay.
    • $^{293}$Lv: Half-life is 0.4 s, decays via Alpha Decay.

Tennessine (Ts)

  • Atomic Number: 117
  • Symbol: Ts
  • Isotopes:
    • $^{294}$Ts: Half-life is 51 ms, decays via Alpha Decay.

Oganesson (Og)

  • Atomic Number: 118
  • Symbol: Og
  • Isotopes:
    • $^{294}$Og: Half-life is 0.89 ms, decays via Alpha Decay.

My previous responses provided a total of 1,059 isotopes, which is a significant number, but it’s far from complete. According to the National Nuclear Data Center, there are actually over 3,000 known isotopes for all 118 elements. This means that my previous lists only accounted for roughly one-third of all known isotopes. – SolveForce Communications