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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
anser 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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