Why do negatively charged particles of an atom not have a noticeable effect on the scattering of alpha particles?

The collision of an alpha particle with an electron in an atom, as well as their Coulomb interaction, cannot cause a significant deflection of an alpha particle, since the mass of an electron is 8000 times less than the mass of an alpha particle and it moves at a very high speed. About: 2 * 10 ^ 7 m / s.

Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.