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In the actinium, series, the first membe...

In the actinium, series, the first member `._(92)U^(235)` emits in succession `7 alpha` particles and `4 beta` particles and gets converted into a stable lead isotope lead isotope. Find the atomic number and mass number of the lead isotope so formed.

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SL ARORA-ATOMS, NUCLEI AND MOLECULES-Problems For Self Practice
  1. .(92)U^(238) on absorbing a neutron goes over to .(92)U^(239). This nu...

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  2. A radioactive nucleus undergoes a series of decays according to the se...

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  3. In the actinium, series, the first member .(92)U^(235) emits in succes...

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  4. Thorium .(90)Th^(232) is converted into .(89)Pb^(208) by radioactive t...

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  5. Tritium has a half life of 12.5 years against beta decay. What fractio...

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  6. The half -life of polonium is 138 days against alpha decay . What frac...

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  7. The half-life of .(6)C^(14) is 5730 years. What fraction of a sample o...

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  8. After a certain lapse of time, fraction of radioactive polonium undeca...

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  9. The half - life of a radioactive substance is 60 years. Calculate its ...

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  10. The half life of Radon is 3.8 days. Calculate how much of 15 milligram...

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  11. The life-life of Bi^210 is 5 days. What time is taken by (7//8)^th par...

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  12. A sample of a radioactive substance has 10^(6) radioactive nuclei. Its...

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  13. The half life of polonium is 140 days. In what time will 15 g of polon...

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  14. 4g of a radioactive material of half life 10 years is kept in a store ...

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  15. One gram of radium is reduced by 2 miligram in 5 yers by alpha-decay....

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  16. A nucleus of Ux(1) has a life of 24.1 days. How long a sample of Ux(2)...

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

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

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

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

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