ICSE-X-Physics
12: Radioactivity
- #28State charge and mass of (i) α-particle, (ii) β-particle.Ans : 28 (i) The charge on α-particle is 3.2 ×10-19 coulomb and its mass is 6.67 × 10-27 kg (i.e., nearly 4 times the mass of proton).
(ii) The charge on β-particle is - 1.6 × 10-19 coulomb and its mass is 9.1 × 10-31 kg.