Nuklida · stabil · alami
Wolfram-182 (¹⁸²W)
Wolfram-182 (¹⁸²W) adalah isotop stabil wolfram dengan 74 proton dan 108 neutron (nomor massa 182). Kelimpahan alaminya 0.2650(16).
Data nuklida
- Unsur
- Wolfram (W, Z = 74)
- Nomor massa (A)
- 182
- Proton (Z)
- 74
- Neutron (N)
- 108
- Massa atom
- 181.948205636 ± 0.000000799 u
- Waktu paruh
- Stable >7.7Zy
- Mode peluruhan
- Peluruhan alfa (α)
- Inti anak
- Hafnium-178 (¹⁷⁸Hf)
- Kelimpahan alami
- 0.2650(16)
- Tahun penemuan
- 1930
- Sumber data
- IAEA Atomic Mass Data Center (NUBASE) and IUPAC CIAAW, via PubChem
Kegunaan isotop wolfram
- 182W is the stable product of the decay of 182Hf, which has a half-life of 8.9×106 years. Although 182Hf was present at the dawn of the Solar System, this isotope has long since decayed. During the formation of the planets, including Earth, the elements hafnium and tungsten were partitioned into silicate minerals (rock forming minerals with silicon-oxygen bonds that constitute more than 90 percent of the Earth’s crust) and metal phases, respectively. The measurement of excessive amounts of 182W, arising from the decay of 182Hf that accumulated in silicate minerals, has been used to estimate the time that elapsed between the formation of the Solar System and accretion of the planets (Fig. IUPAC.74.1),.
Isotop wolfram lainnya
¹⁵⁷W, ¹⁵⁸W, ¹⁵⁹W, ¹⁶⁰W, ¹⁶¹W, ¹⁶²W, ¹⁶³W, ¹⁶⁴W, ¹⁶⁵W, ¹⁶⁶W, ¹⁶⁷W, ¹⁶⁸W, ¹⁶⁹W, ¹⁷⁰W, ¹⁷¹W, ¹⁷²W, ¹⁷³W, ¹⁷⁴W, ¹⁷⁵W, ¹⁷⁶W, ¹⁷⁷W, ¹⁷⁸W, ¹⁷⁹W, ¹⁸⁰W, ¹⁸¹W, ¹⁸³W, ¹⁸⁴W, ¹⁸⁵W, ¹⁸⁶W, ¹⁸⁷W, ¹⁸⁸W, ¹⁸⁹W, ¹⁹⁰W, ¹⁹¹W, ¹⁹²W, ¹⁹³W, ¹⁹⁴W, ¹⁹⁵W, ¹⁹⁶W, ¹⁹⁷W