1.

The unit of radioactivity curie is equal to_________________?

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
Answer» C. 3.55 x 1010 disintegration per sec


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