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The ore of Uranium found in nature conta...

The ore of Uranium found in nature contains `""_(92)^(238)U `and` ""_(92)^(235)U` . Although both the isotopes are fissionable, it is found out experimentally that one of the two isotopes is more easily fissionable.
Name the isotope of Uranium which is easily fissionable

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`""_(92)U^(235)` is more easily fissionable than `""_(92)U^(238)`.
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The ore of uranium found in nature contains ""_(92)U^(238)and""_(92)U^(235) . Although both the isotopes are fissionable, it is found out experimentally that one of the two isotopes is more easily fissionable. Give a reason for your answer.

The ore of uranium found in nature contains ""_(92)U^(238)and""_(92)U^(235) . Although both the isotopes are fissionable, it is found out experimentally that one of the two isotopes is more easily fissionable. Write a nuclear reaction when Uranium 238 emits an alpha particle to form a Thorium (Th) nucleus.

The natural uranium consists of three isotopes ""_(92)^(238)U, ""_(92)^(235)U and ""_(92)^(234)U in the ratio 99.274 : 0.720, 0.006. Find the average atomic mass of uranium.

(a) Name two isotopes of uranium which are fissionable. (b) Which of the isotope mentioned in part (a) above is easily fissionable ? Give reason. (c ) State whether the neutron needed for fission reaction of the isotope mentioned in part (b) above, is slow or fast ?

The isotope of ""_(92)U^(238) decays by alpha -emission to an isotope of thorium (Th). The thorium isotope decays by beta -emission to an isotope of protactinium (Pa). Write down the equation to represents these two nuclear charges.

Write the approximate value of the energy released in the fission of one nucleus of ""_(92)^(235) U . What is the reason for it ?

Part of uranium decay series is shown ._(92)U^(234) to ._(90)Th^(234) to ._(91) Pa^(234) to ._(90)Th^(230) to ._(88)Ra^(226) How many parts of isotopes are there in the above series

Natural uranium is a mixture of three isotopes _92^234U , _92^234U , _92^235U and _92^238U with mass percentage 0.01%, 0.71% and 99.28% respectively. The half-life of three isotopes are 2.5xx10^5yr , 7.1xx10^8yr and 4.5xx10^9yr respectively. Determine the share of radioactivity of each isotope into the total activity of the natural uranium.

Uranium ores on the earth at the present time typically have a composition consisting of 99.3% of the isotope ._92U^238 and 0.7% of the isotope ._92U^235 . The half-lives of these isotopes are 4.47xx10^9yr and 7.04xx10^8yr , respectively. If these isotopes were equally abundant when the earth was formed, estimate the age of the earth.

Uranium ores on the earth at the present time typically have a composition consisting of 99.3% of the isotope _92U^238 and 0.7% of the isotope _92U^235 . The half-lives of these isotopes are 4.47xx10^9yr and 7.04xx10^8yr , respectively. If these isotopes were equally abundant when the earth was formed, estimate the age of the earth.

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