If the radioactive decay constant of radium is \[1.07\times {{10}^{-4} – McqOptions

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1.	If the radioactive decay constant of radium is \[1.07\times {{10}^{-4}}\]per year, then its half life period is approximately equal to [AIIMS 1998]
A.	8,900 years
B.	7,000 years
C.	6,476 years
D.	2,520 years
Answer» D. 2,520 years

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