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प्रश्न
What changes occur in the nucleus of a radioactive element when it emits an alpha particle. Give one example, in support of your answer.
उत्तर
\[\ce{^A_ZX -> {^{A-4}_{z-2}Y} + ^4_2He}\] (α - particle)
Compared to the original or parent nucleus, the resultant nucleus has 2 fewer protons and 2 fewer neutrons, for a total of 4 nucleons.
Example: \[\ce{^238_92U -> ^234_90Th + ^4_2 He}\] (α - particle)
संबंधित प्रश्न
Is it possible for a hydrogen \[\ce{^1_1H}\] nucleus to emit an alpha particle ? Give a reason for your answer.
An α - particle captures one electron. In this case, what does it change to?
What happens to the (i) atomic number, (ii) mass number of an element when α - particle are emitted?
Anemia can be cured by ______ isotope.
Compare the properties of alpha, beta, and gamma radiations.
A nucleus of an atom consists of 146 neutrons and 95 protons. It decays after emitting an alpha particle. How many protons and neutrons are left in the nucleus after an alpha emission?
An α - particle captures two electrons. In each case, what does it change to?
What happens to the position of an element in the periodic table when its nucleus emits an α - particle. Give reason for your answer.
A certain nucleus A (mass number 238 and atomic number 92) is radioactive and becomes a nucleus B (mass number 234 and atomic number 90) by the emission of a particle.
- Name the particle emitted.
- Explain how you arrived at your answer.
- State the change in the form of a reaction.
