Which of the following is/are correct ?

Options

A. `alpha`- rays are more penetrating than `beta`-rays
B. `alpha`- rays have greater ionizing power than `beta`- rays
C. `beta` - particles are not present in the nucleus, yet they are emitted from the nucleus
D. `gamma`-rays are not emitted simultaneously with `alpha` -and `beta`-rays

Answer

B, C, D