Respuesta :

whodayy
The nucleus contains the protons and neutrons giving it the most mass
wiseowl2018

Answer:

The nucleus of an atom contains most of the mass of atom.

Explanation:

Atom has two parts:

  • Nucleus
  • Outer shells/energy levels.

Nucleus contains proton and neutrons while outer shell only contain electron.

Hence nucleus is havier part of atom.