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The rate of disintegration of a radioact...

The rate of disintegration of a radioactive substance is `……………………………` to the number of atoms present at that time .

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The correct Answer is:
Directly proportional
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CENGAGE CHEMISTRY-NUCLEAR CHEMISTRY-Exercise Fill In The Blanks
  1. The half-life of a radioactive isotope is always. ………………………….

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  2. The decay constant related to half- life period is …………..

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  3. The rate of disintegration of a radioactive substance is …………………………… ...

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  4. Radioactive substance of 1 curie is the amount that can produce ………………...

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  5. The last member of 4n+1 series is an isotope of …………………………………. .

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  6. The conversion of one element into another by aritificial means is ter...

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  7. In nuclear reactions, total number of …………… and ………………. are conserved.

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  8. In exoergic reaction, the total mass of products is ……………………….. than t...

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  9. The disappearance of one atomic mass unit (am u) releases ………………………. ...

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  10. The most effective projectile in the transmutation of heavy element is...

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  11. The hydrogen bomb uses the principle of ……………………….

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  12. The atomic bomb uses the principle of ……………… .

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  13. ………………………….. brings fission in U^(235).

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  14. .(7)N^(14)+ .(0)n^(1)rarr ...................+.(1)H^(1)

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  15. Atoms of the same element possessing identical mass but differing in h...

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  16. Nuclear fusion takes place at very high temperature and hence it is ca...

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  17. The splitting of a heavy nuclei with neutron into two smaller nuclei a...

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  18. The age of archaeological findings can be determined by ……………….. meth...

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  19. The age of the earth has been estimated by …………… dating technique.

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  20. ………………….. emitted by Co-60 can burn cancerous cells.

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