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

Half life of a radioactive material is 3600 years. Calculate the average life

Half-life of Radium is 1600 years. Fraction of a sample of radium that is present after 4800 years is

Half life of a radioactive material is 3600 years. Calculate the decay constant.

Half life of radium is 1600 years. Calculate the time required during which 32 gram of radium reduces at 4 gram.