Phosphorus 32 has a half life of 14.3 days how much of a 4 mg sample of phosphuros 32 will remain after 71.5 days

Compare the valence electron configuration of the nobles gas elements seen here. what statement is correct?

Helium decays to form lithium. which equation correctly describes this decay?

Listenbase your answer to the question on the information below.nuclear radiation is harmful to living cells, particularly to fast-growing cells, such as cancer cells and blood cells. an external beam of the radiation emitted from a radioisotope can be directed on a small area of a person to destroy cancer cells within the body.cobalt-60 is an artificially produced radioisotope that emits gamma rays and beta particles. one hospital keeps a 100.0-gram sample of cobalt-60 in an appropriate, secure storage container for future cancer treatment.which choice represents the correct product for the beta decay of the co-60? fe-60ni-60fe-61ni-61