Define disintegration constant and mean life of a radioactive substance. Give
the unit of each.
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Disintegration Constant : is defined as change in number of atoms in a certain compound in unit time either normally or by certain physical or chemical process.It can be a fractional value or real number also, depending upon time for which change is considered.
It is represented by Lambda(λ).It's unit is Per second,Per hour ,Per days,Per month ,Per year.
Mean Life: Mean life of a particle is defined as total time taken by the particle to decay either half, one -fourth, two -third, etc.. of Original amount of that Particle.If the particle is reduced to half of original amount it is called half life. The unit of Mean life is , second, hour, months, years.
Explanation:
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