If the decay constant of a radioactive nuclide is 6.93 x 10−3sec−1, its half life in minutes is:
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Q2
A radioactive element has decay constant 6.93×10−3sec−1. Its half-life period in seconds is:
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Q3
A newly prepared radioactive nuclide has a decay constant λ of 10−6s−1. What is the approximate half-life of the nuclide?
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Q4
A sample of rock from the moon was found to contain the elements X and Y in 1:7 ratio by mole. Element X is radioactive, it decays to Y with half life of 6.93×109 years [X⟶Yt1/2=6.93×109yrs] What is the age of the rock?
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Q5
The half-life of a radioactive nuclide is 100 years. Then, what is its disintegration constant (in year−1) ?