Physical half-life The half-life (t1/2) of aradionuclideis the time taken for its activity to decay to half of its original value. For example, two successive half-lives reduce the activity of a radionuclide by a factor of 2 × 2 = 4. Ten half-lives reduce the activity by a factor...
1. The term "half-life" refers to the time it takes for half of a substance's radioactivity to decay, which is a characteristic property of radioactive materials.2. In the context of chemistry, the half-life is the duration required for a reactant's concentration to reduce to...
(chemistry) The time required for one-half of a given material to undergo chemical reactions. (nucleonics) The average time interval required for one-half of any quantity of identical radioactive atoms to undergo radioactive decay. Also known as half-value period; radioactive half-life. McGr...
Nuclear Chemistry : Half-Life Quiz Quiz
e−λtN=N0e−λtcan be used to findλt. We also know that the half-life of14C is 5730 y, and so onceλtis known, we can use the equationλ=0.693t1/2λ=0.693t1/2to findλand then findtas requested. Here, we postulate that the decrease in14C is solely due to nuclear decay...
orhalf′ life`, n.,pl.-lives(-ˌlaɪvz) 1.the time required for one half the atoms of a given amount of a radioactive substance to decay. 2.the time required for the activity of a substance taken into the body to lose one half its initial effectiveness. ...
Half-life & Radioactive Decay | Equation, Calculations & Graphs 6:33 7:44 Next Lesson Mass Defect Definition, Formula & Examples Fusion, Fission, Carbon Dating, Tracers & Imaging: Applications of Nuclear Chemistry 6:41 Ch 5. Chemical Bonding Ch 6. Liquids and Solids Ch 7. Gases ...
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Calculate half-life, elapsed time, initial, or remaining quantity using this easy calculator. Read below to learn the half-life formula and how to solve it. Half-Life: seconds Decay Constant seconds Mean Lifetime seconds Learn how we calculated thisbelow ...
8.8Elimination half-life Theelimination half-lifemeasures the kinetics of loss of drug from the body as a whole once all distribution equilibria have been achieved. With highly lipid-soluble drugs, such asneuroleptics, it is usually measured as the half-life of plasma level decay at the very ...