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संबंधित प्रश्न
What are free electrons?
When is said to be the nucleus unstable?
What happens to the mass number of an element when (i) an α -particle, (ii) a β -particle, and (iii) γ -radiation is emitted?
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?
A nucleus of an element X which has the symbol `""_84^202` X emits an alpha particle and then a beta particle. The final nucleus is `""_"b"^"a"` Y Find a and b.
What are cathode rays? Why are they called ‘cathode rays’? Name a material which exhibits fluorescence when cathode rays fall on it.
88Ra226 experiences three α - decay. Find the number of neutrons in the daughter element.
Heavy radioactive elements eventually turn into ______.
A radioactive element is placed in an evacuated chamber. Then the rate of radioactive decay will ______.
