Cesium Cs
Element 55 — in the list.
Identity
- Atomic number
- 55
- Symbol
- Cs
- Most abundant neutron number
- 78
- Flow object
- fo-600754739e3e33b1
- Elementary flows
- 22
- PubChem
- https://pubchem.ncbi.nlm.nih.gov/element/55
Nuclides and ions
3 nuclides, 1 ionsA nuclide and an ion of an element are flow objects in their own right — Cs and each of the records below are separate substances, resolved separately and characterised separately. What holds them together is a statement on the child naming this element as its parent, which is why they are drawn under it rather than beside it.
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Nuclides 3
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Half life 2.0650 y ± 0.0004. Decay β-=100%; ε=0.00030±1.2%. chemlin
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Half life 13.01 d ± 0.05. Decay β-=100%. chemlin
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Half life 30.04 y ± 0.04. Decay β-=100%. chemlin
60 further nuclides are known and are not in this list: they are too short-lived for an inventory to carry, and their absence is a decision rather than a gap.
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Ions 1
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Nuclide detail
| Nuclide | Mass number | Half life | Decay modes | Bq/g |
|---|---|---|---|---|
| Cesium-134 | 134 | 2.0650 y ± 0.0004 | β-=100%; ε=0.00030±1.2% | 4.7864e+13 |
| Cesium-136 | 136 | 13.01 d ± 0.05 | β-=100% | 2.7324e+15 |
| Cesium-137 | 137 | 30.04 y ± 0.04 | β-=100% | 3.2141e+12 |