Question

The half life of At is 10ous. If a
sampu Contain 215 mg of at
the
activity of the sample
Sample initially is
1 10²B q
6) 3x 100Bq
C 4-17 ×10^10 Bq

d) 1-6 x 10 ^5Bq
​

Answer 1

Answer:

option dddddd

Explanation:

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Answer 2

Answer:

option D

Explanation:

done...