In nuclear physics, alpha decay is a type of radioactive decay where an unstable atomic nucleus loses an alpha particle.
An alpha particle is fundamentally identical to a helium nucleus. It is composed of:
This composition means an alpha particle has an atomic number (Z) of 2 and a mass number (A) of 4. It is often represented in nuclear reactions as $^4_2\text{He}^{2+}$ or simply $\alpha$. This Helium nucleus representation is standard in describing alpha decay processes.
Therefore, the alpha particle represents a Helium nucleus.
Which type of radioactive decay results in an increase in the atomic number of the parent nucleus by one, while keeping the mass number unchanged?
Radioactivity is measured by
If N 0 is the original mass of the substance of half life \(t_{\frac{1}{2}}=4\) years, then the amount of substance left after 12 years is :
Cobalt therapy is the medical use of ____________ rays from the radioisotope cobalt60 to treat conditions such as cancer.
Which radioactive isotope has a half - life of 5770 years, which is commonly used to estimate the age of organic materials such as paper and parchment?