InterviewSolution
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InterviewSolution
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a. What is meant by radioactivity?b. When is said to be the nucleusunstable? |
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Answer» a. Radioactivity defined as the spontaneous emission of particles (alpha, beta,neutron) or radiation (gamma, K capture), or both at the same time, from the decay of certain nuclides that these particles are, due to an adjustment of their internal structure.Radioactivity can be natural or artificial. In natural radioactivity, the substance already has radioactivity in the natural state.In artificial radioactivity, the radioactivity has been induced by irradiation. b.Thenucleusof this kind of atom issaidto be stable. In some atoms the binding energy is not strong enough to hold thenucleus together, and thenucleiof these atoms aresaidto beunstable.Unstableatoms will lose neutrons and protons as they attempt to become stable. |
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