Chemistry, 29.06.2019 05:30 sarahparah002

Thorium is an element that occurs naturally in the earth's crust. the only naturally occurring isotope of thorium is 232th and it is unstable and radioactive. the first step in the thorium decay chain is the emission of an alpha particle. which of these nuclei emerges from the decay? a) 22888ra b) 23086rn c) 23289ac d) 23892u

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Thorium is an element that occurs naturally in the earth's crust. the only naturally occurring isoto...