An alpha particle (α\alphaα) and a beta-minus particle (β−\beta^{-}β−) are both common types of ionising radiation.
What is the ratio of the specific charge of the alpha particle to the magnitude of the specific charge of the beta-minus particle?
(Assume the mass of a nucleon is 1.67 × 10-27 kg and the rest mass of an electron is 9.11 × 10-31 kg).
1.36×10−41.36 \times 10^{-4}1.36×10−4
2.73×10−42.73 \times 10^{-4}2.73×10−4
5.46×10−45.46 \times 10^{-4}5.46×10−4
3.67×1033.67 \times 10^{3}3.67×103