Which three of the following statements are correct? (i) The mass of an a particle is about four times that of a proton and its charge is two times that of a proton. (ii) Alpha particles with very high energies can easily penetrate the skin. (iii) Elements 130X56 and 131Y56 are isotopes of the same element. (iv) A y ray is not affected by a magnetic field, but it is deflected by an electric field applied at right angles to the path of the y ray. (v) Beta particles are emitted with a range of energies from a given B source. C. (ii); (iv): (v) E. (i): (if); (iv) D.): (i); (h) A (i), (fi); (v) 9. (10) fil: (iv) e OL Q 9 1
