Find the quantity of polonium `._(80)^(210)Po` whose activity is `3.7xx10^(10)` dps. Find also the number of atoms of polonium disintegrated during its mean life. (Half life of polonium is 138 days)

Explain the statement: Half-life of polonium is 3.8 days.

The half life of polonium is 140 days. In what time will 15 g of polonium be disintegrated out of its initial mass of 16 g?

The half life of polonium is 140 days. In what time will 15 g of polonium be disintegrated out of its initial mass of 16 g ?

The half life of polonium is 140 days. In what time will 15 g of polonium be disintegrated out of its initial mass of 16 g ?

Find the activity of 1 g sample of ""_(84)Po^(210) . The half-life of ""_(84)Po^(210) is 138 days.

After a certain lapse of time, fraction of radioactive polonium undecayed is found to be 12.5% of the initial quantity. What is the duration of this time lapsed if the half life of polonium is 138 days?

After a certain lapse of time, fraction of radioactive polonium undecayed is found to be 12.5% of the initial quantity. What is the duration of this time lapsed if the half life of polonium is 138 days ?

After a certain lapse of time,the fraction of radioactive polonium undecayed is foud to be 12.5% of the initial quanitity.What is the duration of this time lapse,if the half life of polonium is 138 days?

Find the activity of 1.00 mg of radon Rn^222 , whose atomic mass is 222 u, given that half-life of radon is 3.8 days

After a certain lapse of time , fraction of radioactive polonium undecayed is found to be 12.5 % of the initial quantity. What is the duration of this time lapse, if half-life of polonium is 139 days?