Which subatomic particle has no charge and is located in the nucleus?

The neutron is the correct answer because it is a subatomic particle found within the nucleus of an atom and possesses no electric charge. This property of being neutral allows neutrons to contribute to the mass of the atom without affecting its overall charge, which is determined by the protons (positively charged) and electrons (negatively charged). Neutrons play a crucial role in stabilizing the nucleus, especially in larger atoms where the balance between protons and neutrons is essential to prevent the atom from becoming unstable and undergoing radioactive decay.

In contrast, protons, which are also located in the nucleus, carry a positive charge. Electrons, on the other hand, are found in orbitals surrounding the nucleus and have a negative charge. A molecule is not a subatomic particle but rather a group of atoms bonded together, making it unrelated to the specific properties of protons, electrons, or neutrons at the atomic level.