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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.
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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
State the energy conversion taking place in a cathode ray tube
What do you mean by Atomic mass
What happens to the mass number of an element when (i) an α -particle, (ii) a β -particle, and (iii) γ -radiation is emitted?
A radioactive source emits three types of radiations. Name them.
(i) Name the radiations which are charged.
(ii) Name the radiations which are most penetrating.
(iii) Name the radiations which travel with the speed of light.
(iv) Name the radiations which have the largest mass.
Define free electrons.
An electrons emitter must have how much work function and melting point.
Which part of the atom undergoes a change in the process of radioactive decay?
Assertion (A): Hydrogen atom consists of only one electron but its emission spectrum has may lines.
Reason (R): Only Lyman series is found in the absorption spectrum of hydrogen atom whereas in the emission spectrum, all the series are found.
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.
