An alpha (α\alphaα) particle is a helium-4 nucleus consisting of two protons and two neutrons.
What is the ratio:
specific charge of an alpha particlespecific charge of a proton \frac{\text{specific charge of an alpha particle}}{\text{specific charge of a proton}} specific charge of a protonspecific charge of an alpha particle0.250.250.25
0.50.50.5
2.02.02.0
4.04.04.0