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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
Answer the following questions based on a hot cathode ray tube.
What will happen to the beam when it passes through the electric field?
Write one use of cathode ray tube.
Under which conditions does the nucleus of an atom tend to radioactive?
State any two precautions to be taken while handling radioactive substances.
A nucleus `""_11^24Na` emits a beta particle to change into Magnesium (Mg)
(i) Write the symbolic equation for the process.
(ii) What are numbers 24 and 11 called?
(iii) What is the general name of `""_12^24Mg `with respect to `""_11^24Na` ?
Radiations given out from a source when subjected to an electric field in a direction perpendicular to their path are shown below in the diagram. The arrows show the path of the radiation A, B and C. Answer the following questions in terms of A, B and C.
1) Name the radiation B which is unaffected by the electrostatic field.
2) Why does the radiation C deflect more than A?
3) Which among the three causes the least biological damage externally.
4) Name the radiation which is used in carbon dating.
What kind of change takes place in a nucleus when a β -particle is emitted?
Name the three main parts of a Cathode Ray Tube.
Which of the following statements is/are correct?
- α particles are photons
- Penetrating power of γ radiation is very low
- Ionization power is maximum for α rays
- Penetrating power of γ radiation is very high
