Question

During beta emission:

Options

• an electron shoots out from the outermost shell of an atom

• an electron shoots out from the innermost shell of an atom

• a neutron decays to form proton and electron. The electrons then shoots out as beta particles.

• none of these

Answer 1

A neutron decays to form proton and electron. The electrons then shoots out as beta particles.

Explanation:

A beta particle is not an electron coming from the shells of an atom. It is produced inside the nucleus when a neutron decays into a proton and an electron; the electron is then ejected as a beta particle.