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प्रश्न
What do you understand by the term radioactivity?
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उत्तर
The process of self, spontaneous and random emission of a or P and y radiations from the nucleus of elements of atomic number higher than 82, is called radioactivity.
संबंधित प्रश्न
When is said to be the nucleus unstable?
State the penetrating range of α, β and γ radiations.
What are the uses of radioactive isotopes in following?
(a) Medical field,
(b) Agriculture,
(c) Industries?
A nucleus is \[\ce{^24_11 Na}\] β-radioactive.
Write the equation represent β-decay.
Name the three main parts of a Cathode Ray Tube.
Heavy radioactive elements eventually turn into ______.
A radioactive material decays by simultaneous emissions of two particles with half-lives of 1400 years and 700 years respectively. What will be the time after which one-third of the material remains? (Take In3 = 1.1)
A radioctive sample decays `7/8` times its original quantity in 15 minutes. The half-life of the sample is ______.
A radioactive element is placed in an evacuated chamber. Then the rate of radioactive decay will ______.
