Question

the isotope of 90 thorium 231 can be converted to 90 thorium 227 by emmision of certain number of alpha andbeta particles. the sum of number of alpha and beta particles wmmitted in this nuclear transformation is?​

Answer 1

Answer:

Explanation:

uranium 234

This thorium in turn transforms into protactinium 234, and then undergoes beta-negative decay to produce uranium 234. This last isotope changes slowly (with a half-life of 245,000 years) into thorium 230, yet another unstable nucleus. Any such decay chain is only stopped by the formation of a stable nucleus.

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