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A sample of pitchblende is found to cont...

A sample of pitchblende is found to contain 50% uranium and 2.425% of lead. Of this lead only 93% was `Pb^206` isotope. If the disintegration constant is `1.52 xx 10^(–10) yr^(–1)` , how old could be the pitchblende deposits?

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A sample pitch blende is found to contain 50% Uranium (U^(238)) and 2.425% Lead. Of this Lead only 93% was Pb^(206) isotope, if the disintegration contant is 1.52 xx 10^(–10) yr^(–1) . How old could be the pitch blende deposit.

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  13. One gram of .(79)Au^(198) (t(1//2) = 65hr) decays by beta- emission to...

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  14. .(92)^(238)U by successive radioactive decays changes to .(82)^(206) P...

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  15. A sample of pitchblende is found to contain 50% uranium and 2.425% of ...

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  16. A radioactive isotope X with half-life of 693xx10^(9) years decay to Y...

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  17. Calculate the mass of C^(14) (half life =5720 years) atoms give 3.7xx1...

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  18. Binding energy per nucleus of .(1)^(2)H and .(2)^(4)He are 1.1 MeV and...

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  20. On analysis a sample of uranium are was found to contain 227g of .(82...

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