Question

compare the mass of protons and Alpha particles​

Answer 1

Answer:

Alpha particle is a helium nucleus containing two protons and two neutrons so its charge is twice of the proton's charge while the mass is about 4 times greater.

Answer 2

Answer:

Since the alpha particle is nothing but positively charged helium nuclei, it has charge of two time of that of the proton, as it is constituted of 2 protons. The rest mass of the alpha particle amounts to 6.64424·10-27 kg, or 3.7273·109 eV, which is almost 4 times of that of proton.