Hello Aspirant,

Let mass of proton be m which is equal to approximate 1.6*10^-27 kg and as alpha particle consists of two protons and two neutrons and mass of proton and neutron is quite similar so mass of alpha particle will be equal to four times of mass of proton i.e. 4m whereas mass of electron is around 1900 times lighter than proton so mass of electron ~ m/1900.

If we talk about relation between their charges so charge of electron is equal to that of proton i.e. 1.6*10^-19 Coulomb but the only difference is that of charge sign, electron has negative sign on its charge and positive sign on proton. As discussed above alpha particle consists of two protons ans two neutrons and neutrons have no charge so alpha particle will have charge two to times of proton.

I hope this information cleared your doubts.

Good Luck!!