Advertisements
Advertisements
प्रश्न
Two radioactive nuclei are represented by xAp and yAq and when p and q are mass numbers and x, y are the atomic number. How can the products be represented, i .e., what are the new values of p, q. x and y after the emission of an α-particle and a β-particle from A and B respectively.
Advertisements
उत्तर
(i) \[\ce{_a^pA->[α-paricles][He_2^4] _{a-2}^{p-4}A}\]
Its mass number decreases by 4 and atomic number decreases by 2.
(ii) \[\ce{_y^qB ->[β-particles]_{y+1}^qB}\]
Its mass number remains the same but the atomic number increases by 1.
संबंधित प्रश्न
Why do Free electrons not leave the metal surface on their own
A radioactive nuclide `""_86^226` Ra decays by emission of two alpha particles, one beta particle and gamma rays. Which of the following is the resulting nuclide X?
Explain the use of radioactive in the field of medicine, agriculture and industry.
What are the uses of radioactive isotopes in following?
(a) Medical field,
(b) Agriculture,
(c) Industries?
What is nucleus of an atom? Compare its size with that of the atom. Name its constitutents. How is the number of these constituents determined by the atomic number its atomic model.
State two characteristics of the substance used as thermionic emitter.
The half-life of a radioactive nuclide is 100 hours. The fraction of original activity that will remain after 150 hours would be ______.
In U238 ore containing Uranium the ratio of U234 to Pb206 nuclei is 3. Assuming that all the lead present in the ore is final stable product of U238. Half life of U238 to be 4.5 × 109 years and the age of ore is ______ × 109 years. (in 109 years)
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.
