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Your question doesn't make sense. All atoms contain components called subatomic particles. Neutrons are neutral particles that are found in the nucleus of the atom along with the positively charged protons. The number of protons determines the element identity of the atom, and neutrons help determine the particular isotope of the atom. Electrons are negatively charged and freely circle the nucleus in three-dimensional orbitals. The ability of electrons to move across orbitals and jump from atom to atom contributes to the process of ion formation. Atoms give up electrons to other atoms to form positively charged ions called cations, and atoms that pick up extra electrons from other atoms form negatively charged ions called anions.

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An ion. Important in homeostasis of salt balance (Na+ Cl-)

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