The half life of radium is about 1600 years of 100 g of radium existing now, 25 g will remain unchanged after(a) 3200 years(b) 4800 years(c) 6400 years(d) 2400 years
Navjyot Kalra , 11 Years ago
Grade 10
1 Answers
Aditi Chauhan
Last Activity: 11 Years ago
(a)
100 g will become 25 g in two half lives so it is 3200 years.
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