Unstable Nuclei and Radioactive Decay

The rays and parcles emifed by the radioacve material

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Unformatted text preview: 1ons. Radioac1vity •  In the late 1890’s, scien,sts no,ced that some substances spontaneously emiFed radia,on in a process they called radioac1vity. •  The rays and par,cles emiFed by the radioac,ve material were called radia1on. •  By emiHng radia,on, atoms of one element can change into atoms of another element. •  Radioac've atoms emit radia'on because their nuclei are unstable. •  Unstable system...
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