Why are beta particles less penetrating than x-rays?
The β particle has a charge. It will be attracted to any molecules or atoms with an opposite charge, causing it to smash into them.What will happen when betas approach the cloud of electrons around the atoms of a material?
Approaching electrons only see the outer charges of molecules and atoms. If you consider the sign of the charges involved, you will see that there is no attraction. If they are going fast enough there will be some crashing, though.It will be attracted to any molecules or atoms with an opposite charge