Adjective
not radioactive
Source: WordNetApplications Petroleum exploration The largest present-day use of nonradioactive caesium is in caesium formate drilling fluids for the extractive oil industry. Source: Internet
Physical and chemical details main In nature, carbon exists as two stable, nonradioactive isotopes : carbon-12 ( mainC ), and carbon-13 ( mainC ), and a radioactive isotope, carbon-14 ( mainC ), also known as "radiocarbon". Source: Internet
Some small differences arise from the fact that it has a higher atomic mass and is more electropositive than other (nonradioactive) alkali metals. citation Caesium is the most electropositive chemical element. Source: Internet