The half-life of radium is about 1600 years. Of 100 g of radium existi – McqOptions

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1.	The half-life of radium is about 1600 years. Of 100 g of radium existing now, 25 g will remain unchanged after [CBSE PMT 2004]
A.	2400 years
B.	3200 years
C.	4800 years
D.	6400 years
Answer» C. 4800 years

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