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True or False Statements : 5 alpha and...

True or False Statements :
`5 alpha` and `4 beta^(-)` are emitted during the radioactive decay chain starting from `._(88)^(226) Ra` and ending at `._(82)^(206) Pb`.

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The correct Answer is:
[T]
`._(88)^(226)Ra rarr._(82)^(206)Pb+x._(2)^(4)He+y^(0)._(-1)e`
`226=206+4x`
`(20)/(4)=x=5 alpha` particle
`88=82+2x-y`
`6=2xx5-y`
`y=4 "" beta` particles
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BANSAL-RADIO ACTIVITY-Exercise-3
  1. True or False Statements : 90% of a radioactive sample is left undec...

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  2. Half-life for certain radioactive element is 5 min. Four nuclei of tha...

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  3. True or False Statements : 5 alpha and 4 beta^(-) are emitted during...

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  4. True or False Statements : The ratio t(1//2) //t(7//8) for a first o...

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  5. Classify each of the following nuclides as either "beta(.(-1)^(0)beta)...

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  6. Which of the following are radioacitve? a. .(48)Cd^(114) b. .(49)...

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  7. Consider the following nuclear reactions : I .(7)^(14)N+.(2)^(4)Hera...

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  8. The activity of the radioactive sample drops to (1/64)^(th) of its o...

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  9. The half life period of .(53)I^(125) is 60 days. What % of radioactivi...

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  10. At any given time a piece of radioactive material (t(1//2)=30 days) c...

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  11. An isotope of Potassium .(19)^(40) K has a half life of 1.4 xx 10^(9...

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  12. At a given instant there are 25% undecayed radioactive nuclei in a s...

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  13. Calculate the energy released in joules and MeV in the following nucle...

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  14. A sample of U^(238) ("half life" = 4.5 xx 10^(9)yr) ore is found to co...

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  15. Calculate the age of a vegetarian beverage whose tritium content is on...

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  16. Ac^(227) has a half life of 22 year . The decay follows two parallel p...

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  17. Nuclei of .^(64)Cu can decay be electron capture (probability 61%) or ...

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  18. In one of neutron induced fission of .(92)U^(235),. (38)Sr^(90) & .(54...

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  19. Most of the weight of the human body is because of the water present...

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  20. Calculate the specific activity of a radioactive substance .(98)^(250)...

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