Question

What changes occur when there is emission of beta particles from

a radioactive substance? ​

Answer 1

Nuclei do not contain electrons and yet during beta decay, an electron is emitted from a nucleus. ... The proton stays in the nucleus, increasing the atomic number of the atom by one. The electron is ejected from the nucleus and is the particle of radiation called beta.

Answer 2

Explanation:

Beta minus particle (β-) emission occurs when the ratio of neutrons to protons in the nucleus is too high. An excess neutron transforms into a proton and an electron. The proton stays in the nucleus and the electron is ejected energetically