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A radioactive isotope ._(Z)X^(A) is converting into ._(Z-8)Y^(A-16) by alpha-decay. If g-atoms._(Z)X^(A)produced 3 mole of He atoms in 20 hours, then calculate the half life of._(Z)X^(A)(in hours). |
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Answer» 10 `K=(1)/(20)ln4` `t_(1//2)=(LN2)/((1)/(10)ln2)` `t_(1//2)=10" hrs."]` |
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