Please help what's the meaning of ato. s and list the parts

Explanation

Structure Of The Atom Our current model of the atom can be broken down into three constituents parts protons, neutron, and electrons. Each of these parts has an associated charge, with protons carrying a positive charge electrons having a negative charge and neutrons possessing no net charge.

h let me think

radioactive decay occurs in unstable atomic nuclei – that is, ones that don't have enough binding energy to hold

the nucleus together due to an excess of either protons or neutrons.