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

Half life of C^19 is 5700 years. Find its decay constant

Half life of C^19 is 5700 years. Find its decay constant

The half life of a radio nuclide is 77 days then its decay constant is

The half life of a radio nuclide is 77 days then its decay constant is

Half life of radium is 1600 years. Find the decay constant and average life.

The half life of radius is 1620 years. The fraction decayed out of the original sample is 3/4. How many years required for it?