Half Life And Average Life

The activity of a nucleus is inversely proportional to its half of average life. Thus, shorter the half life of an element, greater is its radioactivity, i.e., greater the number of atomsd disintegrating per second. The relation between half life and average life is t_(1//2) = (0.693)/(lambda) = tau xx 0.693 or tau = 1.44 t_(1//2) The half life of a radioactive element is 10 years. What percentage of it will decay in 100 years?

The activity of a nucleus is inversely proportional to its half of average life. Thus, shorter the half life of an element, greater is its radioactivity, i.e., greater the number of atomsd disintegrating per second. The relation between half life and average life is t_(1//2) = (0.693)/(lambda) = tau xx 0.693 or tau = 1.44 t_(1//2) Mark the incorrect relation.

The activity of a nucleus is inversely proportional to its half of average life. Thus, shorter the half life of an element, greater is its radioactivity, i.e., greater the number of atomsd disintegrating per second. The relation between half life and average life is t_(1//2) = (0.693)/(lambda) = tau xx 0.693 or tau = 1.44 t_(1//2) The half-life periods of four isotopes are given 1 = 6.7 years, II = 8000 years, III = 5760 years, IV = 2.35 xx 10^(5) years. Which of these is most stable?

Life time || Half Life time || Average Life time OF a Radioactive Sample || Units OF Radioactivity (Baeyer,Curie,Ratherford)

STATEMENT-1: In radioactivity, the nature of a smaple can be understood by its half life or average life but not by its total life. STATEMENT-2: The total life of any radioactive sample is infinite.

Assertion In one half-life of a radioactive substance more number of nuclei are decayed than in one average life. Reason Average life = Half -life/in (2)

Half Life Method

Write the relation between Half-Life and Mean-Life of radio active element.

Define half-life period and average life. Derive relation between them.

The decay constant of a radioactive sample is lambda . The half-life and the average-life of the sample are respectively