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Chemical Kinetics and Nuclear Chemistry question

2020 · Shift 1 · Q17

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JEE Advanced
Chemistry
Chemical Kinetics and Nuclear Chemistry
2020 · Shift 1 · Q17

Chemical Kinetics and Nuclear Chemistry question

2020 · Shift 1 · Q17

JEE AdvancedChemistryChemical Kinetics and Nuclear ChemistryNumerical+4 / −1

{}_{92}^{238}U

is known to undergo radioactive decay to form

{}_{82}^{206}Pb

by emitting alpha and beta particles. A rock initially contained 68

\times

10

-

6 g of

{}_{92}^{238}U

. If the number of alpha particles that it would emit during its radioactive decay of

{}_{92}^{238}U

to

{}_{82}^{206}Pb

in three half-lives is Z

\times

1018, then what is the value of Z?

Numerical answer

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