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The half-life of U^238 is 4.5xx10^9 y. ...

The half-life of `U^238` is `4.5xx10^9` y. In any radioactive sample if 1 g. of that element remains present then determine the activity of the sample in curie unit.
(Avogadro number = `6.023xx10^23`).

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`3.34xx10^7` Cl
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CHHAYA PUBLICATION-ATOMIC NUCLEUS-EXERCISE
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  2. The half-life of a radioactive element is 3 min. If the initial mass o...

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  3. Initial mass of a radioactive element is 1 g. If 0.25 g of the element...

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  4. The half-life of a radioactive element is 1600 y. After what time 10% ...

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  5. One-fourth part of a radioactive element is disintegrated in 664 y. De...

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  6. The half-life of U^238 is 4.5xx10^9 y. In any radioactive sample if 1...

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  7. The activity of 1 g. of a sample of Po^210 is 4442 Ci. Determine the h...

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  14. One -fourth of the amount of a radioactive element decays is 2490 yea...

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  15. The half-life of Radium-226 is 1600 years. What will be the activity o...

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  16. The activity of 1 g of Pb^210 is 77.4 curie. Find its half life. Giv...

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  18. The nuclei P and Q have equal number of atoms at t = 0. Their half-liv...

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