Final answer:
The nucleus of an atom is not mostly empty space, contrary to one of the given statements. It is centrally located, positively charged, and very dense due to the concentration of protons and neutrons.
Step-by-step explanation:
The nucleus of an atom has several characteristics, and it is important to identify which of the given statements is FALSE. The nucleus is centrally located and contains subatomic particles called protons, which are positively charged. Additionally, the nucleus is known for being very dense due to the high concentration of protons and neutrons. However, the statement that is FALSE about the nucleus is that it is mostly empty space. In fact, the majority of an atom's mass is contained within the nucleus.