What is the difference between an α-particle and helium atom?
- The helium atom is composed of 2 protons and 2 neutrons (or 1 neutron) along with 2 electrons in the outer shell.
- On the other hand, α-particle constitutes 2 protons and 2 neutrons bound together to form a particle that is similar to helium (except the presence of electrons).
- Helium is one of the inert gas which is stable (duplet complete) whereas α-particle is unstable and highly reactive.
Concept: Modes of Decay
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