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The half - life of a radioactive substan...

The half - life of a radioactive substance is 60 years. Calculate its decay constant given `log e 2=6930`

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The correct Answer is:
0.01156 years
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SL ARORA-ATOMS, NUCLEI AND MOLECULES-Problems For Self Practice
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  8. 4g of a radioactive material of half life 10 years is kept in a store ...

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  11. The half - life of .(92)U^(238) against alpha - decay is 4.5 xx 10^(9)...

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  12. Lanthanum has a stable La^(139) and radioactive isotope La^(138) of ha...

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  13. An accident occurs in a laboratory in which a large amount of a radioa...

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  14. For a given sample, the count rate is 47.5alpha particle per minute. A...

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  15. One milligram of thorium emits 22alpha particles per minute per unit s...

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  18. Calculate the Q - value of the reaction .(1)H^(2)+.(1)H^(2) rarr .(...

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  19. Find the Q - value for the nuclear reaction: .(2)He^(4)+.(7)N^(14) r...

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  20. When .(92)U^(235) undergoes fission, 0.1% of the original mass is rele...

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