Question

q. 13 what one of the following statements about atomic structure is false? an atom is mostly empty space. the protons and neutrons in the nucleus are very tightly packed. the number of protons and neutrons is always the same in the neutral atom. almost all of the mass of the atom is concentrated in the nucleus.

Explanation:

In a neutral atom, the number of protons and electrons is the same, not protons and neutrons. Protons and neutrons in the nucleus are tightly - packed, an atom is mostly empty space, and almost all of the mass of an atom is concentrated in the nucleus.

Answer:

C. The number of protons and neutrons is always the same in the neutral atom.