The half-life of radon is 3.8, days. Three fo | vedclass

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(c) Decayed fraction $ = \frac{3}{4}$, so undecayed fraction $ = \frac{1}{4}$

Now $\frac{N}{{{N_0}}} = {\left( {\frac{1}{2}} \right)^n}$

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$7.6 $

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(c) Decayed fraction $ = \frac{3}{4}$, so undecayed fraction $ = \frac{1}{4}$

Now $\frac{N}{{{N_0}}} = {\left( {\frac{1}{2}} ight)^n}$

$\Rightarrow \frac{1}{4} = {\left( {\frac{1}{2}} ight)^n} \Rightarrow n = 2$

==> $t = n 	imes {T_{1/2}} = 2 	imes 3.8 = 7.6\;days$

The half-life of radon is $3.8\, days$. Three forth of a radon sample decay in ............$days$

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