Question

Compared to the mass and the penetrating power of an alpha particle, a beta particle has?

1) Less mass and greater penetrating power
2) less mass and less penetrating power
3) more mass and greater penetrating power
4)more mass and less penetrating power

Answer 1

The first one is correct.
An alpha particle has more than 7000 times the mass a beta, but it has less penetrating power because it has a shorter range.