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प्रश्न
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उत्तर
The substance's rate of decay and the type of radiation it emits are unaffected by any physical or chemical changes, including variations in temperature and pressure, extreme heating, freezing, the effect of strong electric and magnetic fields, chemical treatment, oxidation, etc.
This demonstrates unequivocally that the orbital electrons, which are susceptible to such alterations, cannot be the cause of the radioactive event. Thus, the nucleus should be the source of radioactivity. The phenomenon of radioactivity is thus nuclear.
संबंधित प्रश्न
How can they be made to leave the metal surface? (State any two ways)
When is said to be the nucleus unstable?
A radioactive nuclide `""_86^226` Ra decays by emission of two alpha particles, one beta particle and gamma rays. Which of the following is the resulting nuclide X?
State two characteristics of the substance used as thermionic emitter.
What are ‘Becquerel rays’?
Two radioactive sources A and B of half lives of 1 hour and 2 hours, respectively, initially contain the same number of radioactive atoms. At the end of two hours, their rates of disintegration are in the ratio of ______.
A radioctive sample decays `7/8` times its original quantity in 15 minutes. The half-life of the sample is ______.
A deuteron strikes 8O16 nucleus with subsequent emission of an alpha particle. Identify the nucleus so produced:
