Thallium (Tl) – Thorium (Th)

  • Atomic Number: 81
  • Symbol: Tl
  • Isotopes:
    • $^{185}$Tl: Half-life is 1.95 s, decays via Alpha Decay and Positron Emission.
    • $^{186}$Tl: Half-life is 4.5 s, decays via Alpha Decay and Positron Emission.
    • $^{187}$Tl: Half-life is 2.4 s, decays via Alpha Decay and Positron Emission.
    • $^{188}$Tl: Half-life is 7.1 s, decays via Positron Emission and Alpha Decay.
    • $^{189}$Tl: Half-life is 14 s, decays via Positron Emission and Alpha Decay.
    • $^{190}$Tl: Half-life is 2.6 min, decays via Positron Emission and Alpha Decay.
    • $^{191}$Tl: Half-life is 7.5 min, decays via Positron Emission and Alpha Decay.
    • $^{192}$Tl: Half-life is 10.8 min, decays via Positron Emission and Alpha Decay.
    • $^{193}$Tl: Half-life is 21.6 min, decays via Positron Emission and Electron Capture.
    • $^{194}$Tl: Half-life is 33.3 min, decays via Positron Emission.
    • $^{195}$Tl: Half-life is 1.16 h, decays via Electron Capture.
    • $^{196}$Tl: Half-life is 1.84 h, decays via Positron Emission and Electron Capture.
    • $^{197}$Tl: Half-life is 2.84 h, decays via Electron Capture.
    • $^{198}$Tl: Half-life is 5.38 h, decays via Positron Emission and Electron Capture.
    • $^{199}$Tl: Half-life is 7.42 h, decays via Electron Capture.
    • $^{200}$Tl: Half-life is 26.1 h, decays via Electron Capture.
    • $^{201}$Tl: Half-life is 73.0 h, decays via Electron Capture.
    • $^{202}$Tl: Half-life is 12.0 d, decays via Electron Capture.
    • $^{203}$Tl: Stable.
    • $^{204}$Tl: Half-life is 3.78 y, decays via Beta Decay and Electron Capture.
    • $^{205}$Tl: Stable.
    • $^{206}$Tl: Half-life is 4.20 min, decays via Beta Decay.
    • $^{207}$Tl: Half-life is 4.77 min, decays via Beta Decay.
    • $^{208}$Tl: Half-life is 3.053 min, decays via Beta Decay.
    • $^{209}$Tl: Half-life is 2.16 min, decays via Beta Decay.
    • $^{210}$Tl: Half-life is 1.30 min, decays via Beta Decay.
    • $^{211}$Tl: Half-life is 1.4 min, decays via Beta Decay.
    • $^{212}$Tl: Half-life is 30 s, decays via Beta Decay and Neutron Emission.

Lead (Pb)

  • Atomic Number: 82
  • Symbol: Pb
  • Isotopes:
    • $^{188}$Pb: Half-life is 25 s, decays via Alpha Decay and Positron Emission.
    • $^{189}$Pb: Half-life is 51 s, decays via Alpha Decay and Positron Emission.
    • $^{190}$Pb: Half-life is 1.2 min, decays via Alpha Decay and Positron Emission.
    • $^{191}$Pb: Half-life is 1.3 min, decays via Alpha Decay and Positron Emission.
    • $^{192}$Pb: Half-life is 3.5 min, decays via Alpha Decay and Positron Emission.
    • $^{193}$Pb: Half-life is 3.2 min, decays via Alpha Decay and Positron Emission.
    • $^{194}$Pb: Half-life is 12.0 min, decays via Positron Emission and Alpha Decay.
    • $^{195}$Pb: Half-life is 15 min, decays via Positron Emission and Alpha Decay.
    • $^{196}$Pb: Half-life is 37 min, decays via Positron Emission.
    • $^{197}$Pb: Half-life is 63 min, decays via Positron Emission.
    • $^{198}$Pb: Half-life is 2.4 h, decays via Positron Emission.
    • $^{199}$Pb: Half-life is 1.5 h, decays via Electron Capture.
    • $^{200}$Pb: Half-life is 21.5 h, decays via Electron Capture.
    • $^{201}$Pb: Half-life is 9.33 h, decays via Electron Capture.
    • $^{202}$Pb: Half-life is 5.25 x 10⁴ y, decays via Electron Capture.
    • $^{203}$Pb: Half-life is 51.9 h, decays via Electron Capture.
    • $^{204}$Pb: Stable.
    • $^{205}$Pb: Half-life is 1.5 x 10⁷ y, decays via Electron Capture.
    • $^{206}$Pb: Stable.
    • $^{207}$Pb: Stable.
    • $^{208}$Pb: Stable.
    • $^{209}$Pb: Half-life is 3.253 h, decays via Beta Decay.
    • $^{210}$Pb: Half-life is 22.20 y, decays via Beta Decay and Alpha Decay.
    • $^{211}$Pb: Half-life is 36.1 min, decays via Beta Decay.
    • $^{212}$Pb: Half-life is 10.64 h, decays via Beta Decay.
    • $^{213}$Pb: Half-life is 10 min, decays via Beta Decay.
    • $^{214}$Pb: Half-life is 26.8 min, decays via Beta Decay.

Bismuth (Bi)

  • Atomic Number: 83
  • Symbol: Bi
  • Isotopes:
    • $^{188}$Bi: Half-life is 12.7 ms, decays via Positron Emission and Alpha Decay.
    • $^{189}$Bi: Half-life is 19 ms, decays via Positron Emission and Alpha Decay.
    • $^{190}$Bi: Half-life is 1.7 ms, decays via Positron Emission.
    • $^{191}$Bi: Half-life is 15.3 ms, decays via Positron Emission and Alpha Decay.
    • $^{192}$Bi: Half-life is 3.0 s, decays via Positron Emission.
    • $^{193}$Bi: Half-life is 3.2 s, decays via Positron Emission and Alpha Decay.
    • $^{194}$Bi: Half-life is 4.8 s, decays via Positron Emission.
    • $^{195}$Bi: Half-life is 9.6 s, decays via Positron Emission and Alpha Decay.
    • $^{196}$Bi: Half-life is 5.4 min, decays via Positron Emission.
    • $^{197}$Bi: Half-life is 32 min, decays via Positron Emission and Alpha Decay.
    • $^{198}$Bi: Half-life is 3.2 h, decays via Positron Emission and Alpha Decay.
    • $^{199}$Bi: Half-life is 27 min, decays via Electron Capture and Positron Emission.
    • $^{200}$Bi: Half-life is 36.4 min, decays via Positron Emission.
    • $^{201}$Bi: Half-life is 59.1 min, decays via Electron Capture.
    • $^{202}$Bi: Half-life is 1.74 h, decays via Positron Emission and Electron Capture.
    • $^{203}$Bi: Half-life is 11.76 h, decays via Electron Capture.
    • $^{204}$Bi: Half-life is 11.22 h, decays via Positron Emission and Electron Capture.
    • $^{205}$Bi: Half-life is 15.31 d, decays via Electron Capture.
    • $^{206}$Bi: Half-life is 6.24 d, decays via Positron Emission and Electron Capture.
    • $^{207}$Bi: Half-life is 31.55 y, decays via Electron Capture.
    • $^{208}$Bi: Half-life is 3.68 x 10⁵ y, decays via Electron Capture.
    • $^{209}$Bi: Stable.
    • $^{210}$Bi: Half-life is 5.013 d, decays via Beta Decay.
    • $^{211}$Bi: Half-life is 2.14 min, decays via Beta Decay and Alpha Decay.
    • $^{212}$Bi: Half-life is 60.55 min, decays via Beta Decay and Alpha Decay.
    • $^{213}$Bi: Half-life is 45.59 min, decays via Beta Decay and Alpha Decay.
    • $^{214}$Bi: Half-life is 19.9 min, decays via Beta Decay and Alpha Decay.
    • $^{215}$Bi: Half-life is 7.6 min, decays via Beta Decay.
    • $^{216}$Bi: Half-life is 2.16 min, decays via Beta Decay and Neutron Emission.
    • $^{217}$Bi: Half-life is 4.0 min, decays via Beta Decay and Neutron Emission.

Polonium (Po)

  • Atomic Number: 84
  • Symbol: Po
  • Isotopes:
    • $^{190}$Po: Half-life is 2.5 ms, decays via Alpha Decay.
    • $^{191}$Po: Half-life is 17 ms, decays via Alpha Decay.
    • $^{192}$Po: Half-life is 35 ms, decays via Alpha Decay.
    • $^{193}$Po: Half-life is 25 ms, decays via Alpha Decay and Positron Emission.
    • $^{194}$Po: Half-life is 390 ms, decays via Alpha Decay.
    • $^{195}$Po: Half-life is 4.6 s, decays via Alpha Decay and Positron Emission.
    • $^{196}$Po: Half-life is 5.55 s, decays via Alpha Decay and Positron Emission.
    • $^{197}$Po: Half-life is 53 s, decays via Alpha Decay and Positron Emission.
    • $^{198}$Po: Half-life is 1.7 min, decays via Alpha Decay.
    • $^{199}$Po: Half-life is 5.3 min, decays via Alpha Decay, Positron Emission, and Electron Capture.
    • $^{200}$Po: Half-life is 11.5 min, decays via Alpha Decay.
    • $^{201}$Po: Half-life is 15.3 min, decays via Alpha Decay, Positron Emission, and Electron Capture.
    • $^{202}$Po: Half-life is 44.7 min, decays via Alpha Decay.
    • $^{203}$Po: Half-life is 44.0 min, decays via Alpha Decay, Positron Emission, and Electron Capture.
    • $^{204}$Po: Half-life is 3.53 h, decays via Alpha Decay and Electron Capture.
    • $^{205}$Po: Half-life is 1.62 h, decays via Alpha Decay and Electron Capture.
    • $^{206}$Po: Half-life is 8.8 d, decays via Alpha Decay and Electron Capture.
    • $^{207}$Po: Half-life is 5.8 h, decays via Alpha Decay and Electron Capture.
    • $^{208}$Po: Half-life is 2.898 y, decays via Alpha Decay.
    • $^{209}$Po: Half-life is 102 y, decays via Alpha Decay.
    • $^{210}$Po: Half-life is 138.376 d, decays via Alpha Decay.
    • $^{211}$Po: Half-life is 0.516 s, decays via Alpha Decay.
    • $^{212}$Po: Half-life is 299 ns, decays via Alpha Decay.
    • $^{213}$Po: Half-life is 4.2 ms, decays via Alpha Decay.
    • $^{214}$Po: Half-life is 164.3 μs, decays via Alpha Decay.
    • $^{215}$Po: Half-life is 1.78 ms, decays via Alpha Decay.
    • $^{216}$Po: Half-life is 0.145 s, decays via Alpha Decay.
    • $^{217}$Po: Half-life is 5.57 s, decays via Alpha Decay.
    • $^{218}$Po: Half-life is 3.098 min, decays via Alpha Decay and Beta Decay.

Astatine (At)

  • Atomic Number: 85
  • Symbol: At
  • Isotopes:
    • $^{196}$At: Half-life is 40 ms, decays via Positron Emission and Alpha Decay.
    • $^{197}$At: Half-life is 110 ms, decays via Alpha Decay and Positron Emission.
    • $^{198}$At: Half-life is 180 ms, decays via Alpha Decay.
    • $^{199}$At: Half-life is 300 ms, decays via Alpha Decay and Positron Emission.
    • $^{200}$At: Half-life is 430 ms, decays via Alpha Decay and Positron Emission.
    • $^{201}$At: Half-life is 1.05 s, decays via Alpha Decay.
    • $^{202}$At: Half-life is 3.1 s, decays via Alpha Decay and Positron Emission.
    • $^{203}$At: Half-life is 7.4 s, decays via Alpha Decay and Positron Emission.
    • $^{204}$At: Half-life is 9.0 s, decays via Alpha Decay and Positron Emission.
    • $^{205}$At: Half-life is 26.2 s, decays via Alpha Decay and Positron Emission.
    • $^{206}$At: Half-life is 1.83 min, decays via Alpha Decay, Electron Capture, and Positron Emission.
    • $^{207}$At: Half-life is 1.80 h, decays via Alpha Decay and Electron Capture.
    • $^{208}$At: Half-life is 1.63 h, decays via Alpha Decay and Electron Capture.
    • $^{209}$At: Half-life is 5.41 h, decays via Alpha Decay and Electron Capture.
    • $^{210}$At: Half-life is 8.1 h, decays via Alpha Decay and Electron Capture.
    • $^{211}$At: Half-life is 7.21 h, decays via Alpha Decay and Electron Capture.
    • $^{212}$At: Half-life is 0.314 s, decays via Alpha Decay.
    • $^{213}$At: Half-life is 125 ns, decays via Alpha Decay.
    • $^{214}$At: Half-life is 558 ns, decays via Alpha Decay.
    • $^{215}$At: Half-life is 0.1 ms, decays via Alpha Decay.
    • $^{216}$At: Half-life is 0.3 ms, decays via Alpha Decay.
    • $^{217}$At: Half-life is 32.3 ms, decays via Alpha Decay.
    • $^{218}$At: Half-life is 1.5 s, decays via Alpha Decay and Beta Decay.

Radon (Rn)

  • Atomic Number: 86
  • Symbol: Rn
  • Isotopes:
    • $^{195}$Rn: Half-life is 1.0 ms, decays via Alpha Decay.
    • $^{196}$Rn: Half-life is 6.0 ms, decays via Alpha Decay.
    • $^{197}$Rn: Half-life is 66 ms, decays via Alpha Decay.
    • $^{198}$Rn: Half-life is 64 ms, decays via Alpha Decay.
    • $^{199}$Rn: Half-life is 650 ms, decays via Alpha Decay.
    • $^{200}$Rn: Half-life is 1.1 s, decays via Alpha Decay.
    • $^{201}$Rn: Half-life is 3.1 s, decays via Alpha Decay and Electron Capture.
    • $^{202}$Rn: Half-life is 9.9 s, decays via Alpha Decay.
    • $^{203}$Rn: Half-life is 45 s, decays via Alpha Decay.
    • $^{204}$Rn: Half-life is 1.17 min, decays via Alpha Decay.
    • $^{205}$Rn: Half-life is 2.8 min, decays via Alpha Decay and Electron Capture.
    • $^{206}$Rn: Half-life is 5.67 min, decays via Alpha Decay.
    • $^{207}$Rn: Half-life is 9.2 min, decays via Alpha Decay and Electron Capture.
    • $^{208}$Rn: Half-life is 24.35 min, decays via Alpha Decay and Electron Capture.
    • $^{209}$Rn: Half-life is 28.5 min, decays via Alpha Decay and Electron Capture.
    • $^{210}$Rn: Half-life is 2.4 h, decays via Alpha Decay and Electron Capture.
    • $^{211}$Rn: Half-life is 15.3 h, decays via Alpha Decay and Electron Capture.
    • $^{212}$Rn: Half-life is 23.9 min, decays via Alpha Decay.
    • $^{213}$Rn: Half-life is 25.0 ms, decays via Alpha Decay.
    • $^{214}$Rn: Half-life is 0.29 s, decays via Alpha Decay.
    • $^{215}$Rn: Half-life is 2.30 μs, decays via Alpha Decay.
    • $^{216}$Rn: Half-life is 45 μs, decays via Alpha Decay.
    • $^{217}$Rn: Half-life is 0.54 ms, decays via Alpha Decay.
    • $^{218}$Rn: Half-life is 35 ms, decays via Alpha Decay and Beta Decay.

Francium (Fr)

  • Atomic Number: 87
  • Symbol: Fr
  • Isotopes:
    • $^{200}$Fr: Half-life is < 40 ns, decays via Alpha Decay.
    • $^{201}$Fr: Half-life is 67 ms, decays via Alpha Decay and Positron Emission.
    • $^{202}$Fr: Half-life is 290 ms, decays via Alpha Decay and Positron Emission.
    • $^{203}$Fr: Half-life is 480 ms, decays via Alpha Decay and Positron Emission.
    • $^{204}$Fr: Half-life is 3.5 s, decays via Alpha Decay and Positron Emission.
    • $^{205}$Fr: Half-life is 3.8 s, decays via Alpha Decay and Positron Emission.
    • $^{206}$Fr: Half-life is 16 s, decays via Positron Emission and Alpha Decay.
    • $^{207}$Fr: Half-life is 14.8 s, decays via Alpha Decay and Positron Emission.
    • $^{208}$Fr: Half-life is 1.4 min, decays via Positron Emission and Alpha Decay.
    • $^{209}$Fr: Half-life is 50.1 s, decays via Alpha Decay and Positron Emission.
    • $^{210}$Fr: Half-life is 3.2 min, decays via Positron Emission and Alpha Decay.
    • $^{211}$Fr: Half-life is 3.10 min, decays via Alpha Decay, Electron Capture, and Positron Emission.
    • $^{212}$Fr: Half-life is 20.0 min, decays via Electron Capture and Positron Emission.
    • $^{213}$Fr: Half-life is 34.6 s, decays via Alpha Decay.
    • $^{214}$Fr: Half-life is 5.0 ms, decays via Alpha Decay.
    • $^{215}$Fr: Half-life is 88 ns, decays via Alpha Decay.
    • $^{216}$Fr: Half-life is 0.7 μs, decays via Alpha Decay.
    • $^{217}$Fr: Half-life is 16.5 μs, decays via Alpha Decay.
    • $^{218}$Fr: Half-life is 2.0 ms, decays via Alpha Decay.
    • $^{219}$Fr: Half-life is 20 ms, decays via Alpha Decay.
    • $^{220}$Fr: Half-life is 27.4 s, decays via Alpha Decay.
    • $^{221}$Fr: Half-life is 4.8 min, decays via Alpha Decay.
    • $^{222}$Fr: Half-life is 14.2 min, decays via Beta Decay.
    • $^{223}$Fr: Half-life is 22.0 min, decays via Beta Decay and Alpha Decay.
    • $^{224}$Fr: Half-life is 3.33 min, decays via Beta Decay.
    • $^{225}$Fr: Half-life is 4.0 min, decays via Beta Decay and Neutron Emission.
    • $^{226}$Fr: Half-life is 50 s, decays via Beta Decay and Neutron Emission.

Radium (Ra)

  • Atomic Number: 88
  • Symbol: Ra
  • Isotopes:
    • $^{202}$Ra: Half-life is 11.5 ms, decays via Alpha Decay.
    • $^{203}$Ra: Half-life is 400 ms, decays via Alpha Decay and Positron Emission.
    • $^{204}$Ra: Half-life is 1.1 s, decays via Alpha Decay.
    • $^{205}$Ra: Half-life is 1.0 s, decays via Alpha Decay and Positron Emission.
    • $^{206}$Ra: Half-life is 2.4 s, decays via Alpha Decay and Positron Emission.
    • $^{207}$Ra: Half-life is 2.8 s, decays via Alpha Decay and Positron Emission.
    • $^{208}$Ra: Half-life is 3.4 s, decays via Alpha Decay and Positron Emission.
    • $^{209}$Ra: Half-life is 4.6 s, decays via Alpha Decay and Positron Emission.
    • $^{210}$Ra: Half-life is 3.7 s, decays via Alpha Decay.
    • $^{211}$Ra: Half-life is 13 s, decays via Alpha Decay.
    • $^{212}$Ra: Half-life is 13.0 s, decays via Alpha Decay.
    • $^{213}$Ra: Half-life is 2.74 min, decays via Alpha Decay and Electron Capture.
    • $^{214}$Ra: Half-life is 2.46 s, decays via Alpha Decay.
    • $^{215}$Ra: Half-life is 1.55 μs, decays via Alpha Decay.
    • $^{216}$Ra: Half-life is 182 ns, decays via Alpha Decay.
    • $^{217}$Ra: Half-life is 1.64 ms, decays via Alpha Decay.
    • $^{218}$Ra: Half-life is 2.0 ms, decays via Alpha Decay.
    • $^{219}$Ra: Half-life is 10 ms, decays via Alpha Decay.
    • $^{220}$Ra: Half-life is 17.9 ms, decays via Alpha Decay.
    • $^{221}$Ra: Half-life is 28 s, decays via Alpha Decay.
    • $^{222}$Ra: Half-life is 38 s, decays via Alpha Decay.
    • $^{223}$Ra: Half-life is 11.43 d, decays via Alpha Decay.
    • $^{224}$Ra: Half-life is 3.66 d, decays via Alpha Decay.
    • $^{225}$Ra: Half-life is 14.9 d, decays via Beta Decay.
    • $^{226}$Ra: Half-life is 1600 y, decays via Alpha Decay.
    • $^{227}$Ra: Half-life is 42.2 min, decays via Beta Decay.
    • $^{228}$Ra: Half-life is 5.75 y, decays via Beta Decay.
    • $^{229}$Ra: Half-life is 4.0 min, decays via Beta Decay.
    • $^{230}$Ra: Half-life is 2.5 min, decays via Beta Decay.

Actinium (Ac)

  • Atomic Number: 89
  • Symbol: Ac
  • Isotopes:
    • $^{206}$Ac: Half-life is 25 ms, decays via Alpha Decay.
    • $^{207}$Ac: Half-life is 35 ms, decays via Alpha Decay.
    • $^{208}$Ac: Half-life is 90 ms, decays via Alpha Decay.
    • $^{209}$Ac: Half-life is 250 ms, decays via Alpha Decay.
    • $^{210}$Ac: Half-life is 350 ms, decays via Alpha Decay.
    • $^{211}$Ac: Half-life is 860 ms, decays via Alpha Decay and Positron Emission.
    • $^{212}$Ac: Half-life is 1.1 s, decays via Alpha Decay.
    • $^{213}$Ac: Half-life is 1.1 s, decays via Alpha Decay.
    • $^{214}$Ac: Half-life is 5.0 s, decays via Alpha Decay.
    • $^{215}$Ac: Half-life is 0.17 ms, decays via Alpha Decay.
    • $^{216}$Ac: Half-life is 0.28 s, decays via Alpha Decay.
    • $^{217}$Ac: Half-life is 0.35 ms, decays via Alpha Decay.
    • $^{218}$Ac: Half-life is 1.08 μs, decays via Alpha Decay.
    • $^{219}$Ac: Half-life is 11.8 ms, decays via Alpha Decay.
    • $^{220}$Ac: Half-life is 26 ms, decays via Alpha Decay.
    • $^{221}$Ac: Half-life is 52 ms, decays via Alpha Decay.
    • $^{222}$Ac: Half-life is 5.0 s, decays via Alpha Decay and Electron Capture.
    • $^{223}$Ac: Half-life is 2.1 min, decays via Alpha Decay.
    • $^{224}$Ac: Half-life is 2.78 h, decays via Alpha Decay, Electron Capture, and Beta Decay.
    • $^{225}$Ac: Half-life is 10.0 d, decays via Alpha Decay.
    • $^{226}$Ac: Half-life is 29.37 h, decays via Beta Decay and Electron Capture.
    • $^{227}$Ac: Half-life is 21.772 y, decays via Beta Decay and Alpha Decay.
    • $^{228}$Ac: Half-life is 6.13 h, decays via Beta Decay.
    • $^{229}$Ac: Half-life is 62.7 min, decays via Beta Decay.
    • $^{230}$Ac: Half-life is 122 s, decays via Beta Decay and Neutron Emission.

Thorium (Th)

  • Atomic Number: 90
  • Symbol: Th
  • Isotopes:
    • $^{209}$Th: Half-life is 2.8 ms, decays via Alpha Decay.
    • $^{210}$Th: Half-life is 16 ms, decays via Alpha Decay.
    • $^{211}$Th: Half-life is 30 ms, decays via Alpha Decay.
    • $^{212}$Th: Half-life is 300 ms, decays via Alpha Decay.
    • $^{213}$Th: Half-life is 1.4 s, decays via Alpha Decay and Positron Emission.
    • $^{214}$Th: Half-life is 1.2 s, decays via Alpha Decay.
    • $^{215}$Th: Half-life is 1.5 s, decays via Alpha Decay.
    • $^{216}$Th: Half-life is 30 ms, decays via Alpha Decay.
    • $^{217}$Th: Half-life is 240 μs, decays via Alpha Decay.
    • $^{218}$Th: Half-life is 109 ns, decays via Alpha Decay.
    • $^{219}$Th: Half-life is 1.05 μs, decays via Alpha Decay.
    • $^{220}$Th: Half-life is 9.7 μs, decays via Alpha Decay.
    • $^{221}$Th: Half-life is 1.04 s, decays via Alpha Decay.
    • $^{222}$Th: Half-life is 2.22 ms, decays via Alpha Decay.
    • $^{223}$Th: Half-life is 0.65 s, decays via Alpha Decay.
    • $^{224}$Th: Half-life is 1.05 s, decays via Alpha Decay.
    • $^{225}$Th: Half-life is 8.0 min, decays via Alpha Decay.
    • $^{226}$Th: Half-life is 30.56 min, decays via Alpha Decay.
    • $^{227}$Th: Half-life is 18.72 d, decays via Alpha Decay.
    • $^{228}$Th: Half-life is 1.913 y, decays via Alpha Decay.
    • $^{229}$Th: Half-life is 7932 y, decays via Alpha Decay.
    • $^{230}$Th: Half-life is 7.54 x 10⁴ y, decays via Alpha Decay.
    • $^{231}$Th: Half-life is 25.52 h, decays via Beta Decay.
    • $^{232}$Th: Half-life is 1.405 x 10¹⁰ y, decays via Alpha Decay.
    • $^{233}$Th: Half-life is 22.3 min, decays via Beta Decay.
    • $^{234}$Th: Half-life is 24.10 d, decays via Beta Decay.
    • $^{235}$Th: Half-life is 7.2 min, decays via Beta Decay and Neutron Emission.
    • $^{236}$Th: Half-life is 3.5 min, decays via Beta Decay.
    • $^{237}$Th: Half-life is 2.5 min, decays via Beta Decay and Neutron Emission.

Next batch: Elements 91-100.

Protactinium (Pa) – Fermium (Fm) – SolveForce Communications

Key terms in plain language

Open a term for a concise explanation of language used on this page.

VoIP

Voice over Internet Protocol carries phone calls over an IP network instead of a traditional analog phone line. Call quality depends on network stability, latency, and traffic management.

Unified Communications (UCaaS)

A cloud-based combination of business calling, messaging, meetings, presence, and collaboration tools managed as one communications service.

SIP Trunking

A service that connects a business phone system to the public telephone network using Internet Protocol, replacing or supplementing traditional phone lines.

Bandwidth

The amount of data a connection can carry in a given time, usually measured in Mbps or Gbps. More bandwidth supports more users, devices, and simultaneous applications.

Latency

The time it takes data to travel between two points. Lower latency improves voice, video meetings, cloud applications, gaming, and other real-time services.

Service-Level Agreement (SLA)

A provider’s written commitment covering service targets such as availability, response time, repair time, and sometimes financial credits when commitments are missed.