Respuesta :
Answer: 4: 83 protons
Explanation:
In elements with more than 83 protons, all of the isotopes are radioactiv
Radioactive elements lose their proton or neutron via the radioactive decay. The radioactive elements include all those elements whose nuclei contain more than 83 protons.
Radioactive Elements:
These are the element whose nucleus are very heavy which make it unstable. Hence, these elements lose their proton or neutron via the radioactive decay.
- The elements that have more than 83 protons are not able to bind all the nucleon.
- They radio decay to form lighter elements.
Therefore, the radioactive elements include all those elements whose nuclei contain more than 83 protons.
To know more about radioactive elements, refer to the link:
https://brainly.com/question/23153828
