the half life of radium is about 1600 years of 100 g of radium existing now 25 g remain unchanged

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

The half life of radium is about 1200 years.if hundred gram of radium is existing now than 25g will remain undecayed after

If the half life of radium is 1620 years then its decay constant is

half life of radium is 1580 years. Its average life will be

The half-life of radium is 1600 years. After how many years 25 % of a radium block remains undecayed ?

The half life of radium (226) is 1620 years. The time takend to convert 10 g of radium to 1.25 g is a. 810 years b. 1620 years c. 3240 years d. 4860 years