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How do the mass number and atomic number...

How do the mass number and atomic number change in `alpha` -decay? A nucleus X becomes nucleus Y as a result of `alpha`-decay. Represent it by an equation.

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MODERN PUBLICATION-NUCLEI-REVISION EXERCISES (VERY SHORT ANSWER QUESTIONS)
  1. Explain alpha- decay ?

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  2. Why alpha particles have high ionising power than beta rays?

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  3. How do the mass number and atomic number change in alpha -decay? A nuc...

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  4. What percentage of a radioactive substance will left undecayed after f...

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  5. A radioactive nucleus decays by emitting one alpha and two beta partic...

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  6. Why control rods are made up of cadmium?

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  7. Why nuclear fusion is very difficult to carry out?

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  8. Why nuclear fusion is also known as thermonuclear reaction?

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  9. Write the relation between average life and decay constant of a radioa...

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  10. When a beta^(-) particle is emitted from a nucleus, the neutrons-proto...

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  11. The curve representing the energy spectrum of beta -particles is

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  12. beta^(+) तथा beta^(-) क्षय क्रिया समझाइए |

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  13. What is nuclear fission ? Given an example to illustrate it.

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  14. What do you mean by nuclear fusion ?

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  15. नाभिकीय श्रृंखला अभिक्रिया में न्यूट्रॉन गुणन कारक से क्या तात्पर्य है...

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  16. What is meant by chain reaction ?

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  17. What happens when neutron reproduction factor is greater than one?

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  18. What is the role o f coolant in nuclear reactors?

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  19. What do you mean by nuclear holocaust?

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  20. In proton-proton cycle, what is the approximate energy released?

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