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Half-life period of a radioactive elemen...

Half-life period of a radioactive element is 100 seconds. Calculate the disintegration constant and average life period. How much time will it take for 90% decay?

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`t^(1//2)=100 sec`
average life period `tau=(1)/(lambda)=(1)/(0.00693)=1.44 sec^(-1)`
`=(2.303)/(0.00693) log (100)/(10)`
`=(2.303)/(0.00693) log 10=332.3 sec`
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NCERT BANGLISH-NUCLEAR CHEMISTRY-SELF EVALUATION
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  10. Loss of a beta-particle is equivalent to

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  11. Which of the following is used as neutron absorber in the nuclear reac...

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  12. Define radio activity.

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  13. What is half life period.

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  14. Write two difference between chemical reaction and nuclear reaction.

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  15. What is Q value of a nuclear reaction?

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  16. What are the types of nuclear reaction. Give example for each type.

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  17. Explain the principle behind the Hydrogen bomb.

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  18. State two uses of radio carbon dating.

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  19. What is binding energy of Nucleus?

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  20. What is radioactivity? How was the phenomenon discovered?

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