What are `alpha`-particles?

What is the charge on alpha -particles ?

What is alpha particle?

A neutron, a proton, an electron and an alpha particle enter a region of constant magnetic field with equal velocities. The magnetic field is along the inward normal to the plane of paper. The tracks of the particles are labelled in Fig. SAQ 11. which of the tracks show the path of the electron and alpha-particles ?

What are beta particles?

What is the mass of an alpha -particle ?

In Rutherford alpha-particl es scattering experiments, why most of alpha-particl es pass almost unscattered?

The ratio of specific charge of a proton and an alpha-particle is :

One mole of alpha -particles are trapped inside a closed box. Find the number of electric field lines emanating from the alpha -particles.