1.

The half-life of radium (226) is 1620 years. The time taken to convert 10 grams of radium to 1.25 grams is

Answer»

810 years
1620 years
3240 years
4860 years

Solution :`t = (2.303 XX t_(1//2))/(0.693) "LOG" (N_(0))/(N)`


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