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Naturally occurring strontium is nonradioactive and nontoxic at levels normally found in the environment, but 90 Sr is a radiation hazard. [4] 90 Sr undergoes β − decay with a half-life of 28.79 years and a decay energy of 0.546 MeV distributed to an electron, an antineutrino, and the yttrium isotope 90 Y, which in turn undergoes β − decay with a half-life of 64 hours and a decay energy ...
The mean strontium content of ocean water is 8 mg/L. [50] [51] At a concentration between 82 and 90 μmol/L of strontium, the concentration is considerably lower than the calcium concentration, which is normally between 9.6 and 11.6 mmol/L. [52] [53] It is nevertheless much higher than that of barium, 13 μg/L. [11]
The longest-lived of these isotopes, and the most relevantly studied, are 90 Sr with a half-life of 28.9 years, 85 Sr with a half-life of 64.853 days, and 89 Sr (89 Sr) with a half-life of 50.57 days. All other strontium isotopes have half-lives shorter than 50 days, most under 100 minutes.
Molar mass: 125.62 g/mol Density: 4.24 g/cm 3: Melting point: ... Another use is as a carrier of strontium-90 radioisotope in radioisotope thermoelectric generators.
Molar mass: 205.58 g/mol ... Strontium aluminate is an aluminate compound with the chemical formula SrAl 2 O 4 ... namely strontium-90. [10]
Molar mass: 183.49 g/mol Appearance White, opaque crystals Density: ... As strontium-90 has a high fission product yield and is easily extracted from spent nuclear ...
Molar mass: 175.64 g·mol −1 Appearance White powder [1] Density: 2.08 g/cm 3: Boiling point: ... Strontium oxalate is a compound with the chemical formula SrC 2 O 4.
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