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Chemistry, 18.06.2020 00:57 sarahholt517

The half-life for 1850s is about 94 days. Which of the following reasons best explains why NAA is not a convenient method to obtain this value?1. Os is an expensive metal and is not suitable for radioactive measurements. 2. Os is too intensely radioactive to handle safely in an NAA apparatus. 3. The Os half-life is too long to be measured conveniently. 4. NAA is less accurate for metallic elements such as Os.

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