The half life of radon is 3.8 days . After how many days will only one twentieth of radon sample be left over ?

The half-life period of radon is 3.8 days. After how many will only one-twentieth of radon sample be left over?

The half-life of a radioactive sample is 6.93 days. After how many days will only 1/20 of the sample be left over? [Take log_(e)(20) = 3.0 ]

The half-life of radon is 3.8 days. After how many days 19/20 of the sample will decay ?

The half life of a radioactive material is 6.93 hour. After how many hours will only one-twentieth of the material be left over? Take log_e (20) = 3.0.

The half-life of radon is 3.8 days. Three forth of a radon sample decay in.

The half-life of radon is 3.8 days. Calculate how much radon will be left out of 25 mg after 19 days.

Radon has 3.8 days as its half-life . After how many days 25% of a radon sample remains undecayed ?

The half life of radioactive Radon is 3.8 days . The time at the end of which (1)/(20) th of the radon sample will remain undecayed is (given log e = 0.4343 )

The half-life of pononium is 140 days. After how many days. 16 gm polonium will be reduced to 1 gm (or 15 gm will decay) ?