The emission of an alpha particle, which consists of two protons and two neutrons, always results in transmutation because the parent nucleus is losing two protons and two neutrons. This means that the atomic number is decreasing by two and the mass number is decreasing by four. As a result, the parent nucleus is transforming into a new element with a different atomic number. This process is known as transmutation. Since the alpha particle is relatively large and carries a significant amount of energy, it can easily disrupt the stability of the parent nucleus, leading to its decay and transformation.
