Distinguish, for an atom, between a nucleus and a nucleon.
Radon gas is a naturally occurring radioactive gas with a half-life of $3.8$ days. In a room, the measured activity of radon gas is $97\,\text{Bq}$ in each $1.0\,\text{m}^3$ of air.
Calculate the decay constant, in $\text{s}^{-1}$, of radon.
Calculate the number of radon atoms that produce an activity of $97\,\text{Bq}$.
Radon gas is a naturally occurring radioactive gas with a half-life of $3.8\ \text{days}$. In a room, the activity of radon gas is measured as $97\ \text{Bq}$ in each $1.0\ \text{m}^3$ of air. Calculate the decay constant, in $\text{s}^{-1}$, of radon.
Calculate the number of radon atoms that produce an activity of $97\ \text{Bq}$.
A volume of $2.5 \times 10^{-2}\ \text{m}^3$ of air in the room contains $1.0\ \text{mol}$ of molecules. Determine the ratio, for $1.0\ \text{m}^3$ of air, $\dfrac{\text{number of radon atoms}}{\text{number of air molecules}}$.