For 10 points, name this term denoting the amount of time it takes a quantity to drop to a certain fraction of its initial value, which for Carbon-14 is 5,730 years.
One variety of this quantity is proportional to the volume of distribution divided by clearance and is used when computing the "effective" variety of this quantity for drug concentration. For a second order reaction, it is one over the initial concentration times the rate constant, while this quantity is independent of concentration in first order reactions. Isotopes in the island of stability are expected to have comparatively large values for this quantity for decay, with values on the order of minutes to days. For 10 points, name this term denoting the amount of time it takes a quantity to drop to a certain fraction of its initial value, which for Carbon-14 is 5,730 years.
One variety of this quantity is proportional to the volume of distribution divided by clearance and is used when computing the "effective" variety of this quantity for drug concentration.
Half Life