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Osmium (76Os) has seven naturally occurring isotopes, six of which are stable. Osmium 193 is a...

Osmium (76Os) has seven naturally occurring isotopes, six of which are stable. Osmium 193 is a beta-emitter. A sample of 193Os with mass of 58.36 μg emits 13.52×108 β

particles in a time interval of 32 min. What is the half-life (in years) of this nuclide?

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