Question

wht alpha particle mean??

Answer 1

Alpha particles:

• Alpha particles are fast moving He (Helium) nuclei which are emitted when a radioactive atom undergoes decay.
• An alpha particle consists of 2 protons and 2 neutrons.
• Because it has no electron cloud, it has an overall charge of +2.
• It is denoted by the symbol α and is written ⁴₂He or He²⁺ as there are no electrons.
• They have four units of mass.