Question

Explain why a new element is formed by α- particle emission but no new element is formed by Y– ray emission from a radioactive element .​

Answer 1

Answer:

III.A Alpha Radiation

As charged particles, such as alpha particles, move through material, energy is transferred from the radiation to the atoms or molecules that make up the material. The major energy-loss mechanisms are electronic excitation and ionization. The alpha particle has a high electrical charge but a low velocity due to its large mass, and interactions are frequent. These interactions are with the loosely bound, outer electrons of the atoms in the material and should not be considered collisions. Since the particle is positively charged, it exerts an attractive force on the oppositively charged electron. In some cases, this force is not sufficient to separate the electron from the atom, but the electron is raised to a higher energy state and the atom is said to be “excited.” In other cases, the attractive force is sufficient to remove the electron from the atom (ionization). The closer an alpha particle passes near an electron the stronger the force and the higher the probability an ionizing event will occur. In these situations, the electron may be imagined as being “ripped” from its orbit as the alpha particle passes nearby.

Explanation:

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