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प्रश्न
A radioactive substance is oxidized. What changes would you expect to take place in the nature of radioactivity? Explain your answer.
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उत्तर
There will be no change in the nature of radioactivity. This is because radioactivity is a nuclear phenomenon.
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संबंधित प्रश्न
State any two precautions to be taken while handling radioactive substances
State the penetrating range of α, β and γ radiations.
Radioactive substances were found to give off three types of rays. Name them. How do they
(a) React to the magnetic field?
(b) React to the electric field?
(c) Act when different thickness of lead sheets is placed in their path?
The half-life of a radioactive nuclide is 100 hours. The fraction of original activity that will remain after 150 hours would be ______.
Two radioactive sources A and B of half lives of 1 hour and 2 hours, respectively, initially contain the same number of radioactive atoms. At the end of two hours, their rates of disintegration are in the ratio of ______.
The activity of a certain radionuclide decreases to 15 percent of its original value in 10 days. What is its half life?
[ln (0.15) = -1.9]
A radioactive element is placed in an evacuated chamber. Then the rate of radioactive decay will ______.
A deuteron strikes 8O16 nucleus with subsequent emission of an alpha particle. Identify the nucleus so produced:
When an α-particle of mass m moving with velocity ν bombards on a heavy nucleus of charge Ze, its distance of closest approach from the nucleus depends on m as:
Assertion (A): The force of repulsion between atomic nucleus and α-particle varies with distance according to inverse square law.
Reason (R): Rutherford did α-particles scattering experiment.
