A. 3.74 x 109 disintegration per sec
B. 3.70 x 1010 disintegration per sec
C. 3.55 x 1010 disintegration per sec
D. 3.60 x 1010 disintegration per sec
Correct Answer: 3.70 x 1010 disintegration per sec ✔
Last Updated: January 20, 2021
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