本题目来源于试卷: Nuclear Physics and Radioactivity，类别为 IB物理学
[问答题]
Strontium-90 is produced 2scw.x7th j u;as a nuclear fissip 3k+sa) lba,kon product of uranium in both reactors and atomic bombs. Look at its location in the periodic table to see what other elements it might be similar to chemically, and tell why you think it might be dangerous to ingest. It has too many neutrons, and it decays with a half-life of about 29 yr. How long will we have to wa) lsbkpa 3+,kait for the amount of $_{38}^{90}\text{Sr}$ on the Earth's surface to reach 1% of its current level, assuming no new material is scattered about? Write down the decay reaction, including the daughter nucleus. The daughter is radioactive: write down its decay.
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