The half-life of radium is about 1600 years. Of 100g of radi... | Physics | SolveeIt | Solveeit

Today, August 19

Question

The half-life of radium is about 1600 years. Of 100g of radium existing now, 25g will remain undecayed after

A

6400 years

B

2400 years

C

3200 years

D

4800 years

Answer

3200 years

Explanation

Solution

Of 100g of radium existing now, 25g will remain undecayed after 4800 years.