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Radioactivity is a nuclear phenomenon'. ...

Radioactivity is a nuclear phenomenon'. Comment on this statement.

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ICSE-RADIOACTIVITY-EXERCISE-12(A)
  1. How are gamma radiations produced ? Mention two common properties of t...

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  2. An alpha-particle captures (i) one electron, (ii) two electrons. In ea...

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  3. Radioactivity is a nuclear phenomenon'. Comment on this statement.

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  4. What kind of change takes place in a nucleus when a gamma-particle is ...

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  5. A certain radioactive nucleus emits a particle that leaves its mass nu...

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  6. What happens to the (i) atomic number, (ii) mass number of the nucleus...

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  7. What happens to the position of an element in the periodic table when ...

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  8. What changes occur in the nucleus of a radioactive element when it emi...

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  9. An atomic nucleus A is composed of 84 protons and 128 neutrons. The nu...

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  10. A certain nucleus A ( mass number 238 and atomic number 92 ) is radioa...

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  11. State whether the following nuclear disintegrations are allowed or not...

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  12. A nucleus ""(11)^(24) Na is beta-radioactive. (a) What are the numb...

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  13. A nucleus of stable phosphorus has 15 protons and 16 neutrons. (a) W...

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  14. An element P disintegrates by alpha emission and the new element suffe...

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  15. A nucleus ""(Z)^(A) X emits 2 alpha particles and 1 beta particle to ...

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  16. Complete the following sentences : (a) The mass number and atomic nu...

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  17. Complete the following nuclear changes : (a) ""(x)^(a) P to Q +(-1)^...

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  18. Name one radio isotope and state its use.

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  19. Why are the alpha particles not used in radio therapy ? [Hint : alph...

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  20. Why do we usually use isotopes emitting gamma radiations as radioactiv...

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