Determine the amount of $$84Po210$$ necessary to provide a source of α particles of $$10$$ $$milli-curie$$ strength if mean life of $$84Po210$$ is $$1.72$$×$$107$$ $$sec$$

Question

Determine the amount of   $$84Po210$$  necessary to provide a source of α particles of $$10$$ $$milli-curie$$ strength if mean life of   $$84Po210$$ is $$1.72$$×$$107$$ $$sec$$

Infinity Learn · Accepted Answer

Activity. $$A=dNdt=$$λN Given : A $$=$$ $$10$$ milli curie $$=$$ $$10$$×$$10-3$$×$$3.7$$×$$1010$$ dps λ$$=1Tm=11.72$$×$$107sec-1$$ we know that  number of atoms $$=N=mass$$ in grams xavagadro numbermolar mass No of atoms $$=$$ $$N=A$$λ$$=10$$×$$10-3$$×$$3.7$$×$$1010$$×$$1.72$$×$$107$$  ⇒$$N=6.36$$×$$1015$$  Mass of all these atoms $$=$$ moles×molar mass $$=$$ NNA×M ⇒Mass $$=2106$$×$$1023$$×$$6.36$$×$$1015=2.2$$×$$10$$−$$6gm$$

Determine the amount of $_{84} P o^{210}$ necessary to provide a source of $α$ particles of 10 milli-curie strength if mean life of $_{84} P o^{210}$ is $1.72 \times 10^{7} s e c$

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Determine the amount of 84Po210 necessary to provide a source of α particles of 10 milli-curie strength if mean life of 84Po210 is 1.72×107 sec

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Determine the amount of $_{84} P o^{210}$ necessary to provide a source of $α$ particles of 10 milli-curie strength if mean life of $_{84} P o^{210}$ is $1.72 \times 10^{7} s e c$