Chemistry & Chemical Reactivity
Solutions
Chemistry & Chemical Reactivity
The uranium-235 radioactive decay series includes 7 alpha emissions and 4 beta emissions. Identify the stable isotope at the end of this series.
Interpretation:
The stable isotope at the end, when
Concept introduction:
Alpha particle:
- Alpha rays (or) Alpha particles are the positively charged particles.
- A highly energetic helium nucleus which contains two protons and two neutrons is called the alpha particle.
- Mass of an alpha particle is 4 times the mass of a proton or Hydrogen nucleus and is equal to that of helium nucleus.
Beta particle:
- Beta particles are highly energetic electrons.
- They are negatively charged and have a negligible mass.
- The mass of a Beta particle is equal to the mass of an electron.
The stable isotope in uranium-235 radioactive decay series is lead-207 by 7 alpha emission and 4 beta particle emission is shown below,
Chapter 25 Solutions
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