Compared to the entire atom ,the nucleus of the atom

Compared to the entire atom, the nucleus of the atom is:

C. Smaller and contains most of the atom's massAn atom is the tinitest way a matter can be broken down into. Atoms can either be negatively or positively charged. An atom is made up of:Protons (positive charge)Electrons  (negative charge)Neutrons (no charge)The nucleus of an atom is the part of the atom that contains the protons and the neutrons at the middle of the atom.The mass of an atom is the size of the atom and the SI unit is measured in kilograms. As a result of this, when compared to the entire structure of the atom, the nucleus of the atom is smaller,but contains most of the mass of the atom.Therefore, the correct answer is option C.

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C- smaller and contains most of the atom's mass.

You use the atomic number to find out how many protons and neutrons there are in the atom. you use the atomic mass to find out how many protons and electrons there are in the atom.