Nuklida · stabil · alami
Serium-142 (¹⁴²Ce)
Serium-142 (¹⁴²Ce) adalah isotop stabil serium dengan 58 proton dan 84 neutron (nomor massa 142). Kelimpahan alaminya 0.111 14(51).
Data nuklida
- Unsur
- Serium (Ce, Z = 58)
- Nomor massa (A)
- 142
- Proton (Z)
- 58
- Neutron (N)
- 84
- Massa atom
- 141.909250208 ± 0.000002623 u
- Waktu paruh
- Stable >2.9Ey
- Mode peluruhan
- Peluruhan alfa (α), Peluruhan beta ganda
- Inti anak
- Barium-138 (¹³⁸Ba), Neodimium-142 (¹⁴²Nd)
- Kelimpahan alami
- 0.111 14(51)
- Tahun penemuan
- 1925
- Sumber data
- IAEA Atomic Mass Data Center (NUBASE) and IUPAC CIAAW, via PubChem
Kegunaan isotop serium
- 138Ce is a radiogenic isotope produced by decay of 138La, with a half-life of 1.06×1011 years, one of the longest clocks in geochronology. Thus, the isotope-amount ratio n(138Ce)/n(142Ce) can be used for dating rocks on long time scales (billions of years) and can also be used as a chemical tracer in geochemical studies.
Isotop serium lainnya
¹¹⁹Ce, ¹²⁰Ce, ¹²¹Ce, ¹²²Ce, ¹²³Ce, ¹²⁴Ce, ¹²⁵Ce, ¹²⁶Ce, ¹²⁷Ce, ¹²⁸Ce, ¹²⁹Ce, ¹³⁰Ce, ¹³¹Ce, ¹³²Ce, ¹³³Ce, ¹³⁴Ce, ¹³⁵Ce, ¹³⁶Ce, ¹³⁷Ce, ¹³⁸Ce, ¹³⁹Ce, ¹⁴⁰Ce, ¹⁴¹Ce, ¹⁴³Ce, ¹⁴⁴Ce, ¹⁴⁵Ce, ¹⁴⁶Ce, ¹⁴⁷Ce, ¹⁴⁸Ce, ¹⁴⁹Ce, ¹⁵⁰Ce, ¹⁵¹Ce, ¹⁵²Ce, ¹⁵³Ce, ¹⁵⁴Ce, ¹⁵⁵Ce, ¹⁵⁶Ce, ¹⁵⁷Ce, ¹⁵⁸Ce, ¹⁵⁹Ce