What is the name of the negatively charged particle found in the outer shell of an atom?

The negatively charged particle found in the outer shell of an atom is known as the electron. Electrons play a crucial role in chemical bonding and electricity. They are located in orbitals around the nucleus of the atom and occupy higher energy levels in the outer shells. Because of their negative charge, they are attracted to the positively charged protons in the nucleus, which helps keep them in orbit around the nucleus.

In contrast, protons are positively charged particles located in the nucleus, while neutrons have no charge and also reside within the nucleus. An ion refers to an atom or molecule that has gained or lost one or more electrons, resulting in a net charge, but it is a broader term and not specifically a description of the particles found in the outer shell of an atom. This context clarifies why the term "electron" is accurately associated with the charged particles in the outer shell of an atom.