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Asked by jhajuhi19 | 30th Aug, 2021, 08:02: PM

Expert Answer:

Number of atoms of radioactive element X will be constant before and after the reaction.
Since chemical reaction occurs very fast and activity depends on number of atoms of X ,
Activity Ao will remain same even after the chemical reaction
Answer :-  (b) Ao

Answered by Thiyagarajan K | 30th Aug, 2021, 08:23: PM

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