Nuclei of `.^(64)Cu` can decay be electron capture (probability 61%) or by `beta^(+)` decay (39%). Half life of `.^(64)Cu` is 12.7 hour. Find the partial half life for electron capture decay oricess,

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

Cu^(64)(" half life" =12.8 "hours" ) decay by beta^(c-)- emission (38%), beta^(o+)- emission(19%), and electron capture (43%) . Write the decay products and calculate partial half lives for each of the decay processes.