Respuesta :
When an atom has a high neutron-to-proton ration, that atom is very unstable and thus, radioactive. The more neutrons an atom has, the more radioactive it is. So,it is only logical that the element with the greatest number of neutrons is Uranium. It has 140 neutrons.
Answer:
Tennessine
Explanation:
The nucleus of an atom contains protons and neutrons. These are subatomic particles. Proton is positively charged while a neutron is a neutral particle. Both these particles have similar mass.
The element whose atom has greatest average number of neutrons is Tennessine. It has 177 neutrons.