Answer: J. It is centrally located structure comprising almost all of the atomic mass and having an overall positive charge.
Step-by-step explanation:
- Mass of atom = Number of protons + Number of neutron
, and Number of electrons is equals to the number of protons in a particular atom.
The nucleus of an atom was is a centrally located structure in it , discovered in 1911 by Ernest Rutherford , it consists of two sub-atomic particles 1) protons that carries positive charge and 2) neutrons that carries no charge.
It means nucleus comprising almost all of the atomic mass.
Hence, the statement best describes the nucleus of an atom is "It is centrally located structure comprising almost all of the atomic mass and having an overall positive charge."
