The magnetic moment of an electron refers to the property of the electron that determines its interaction with magnetic fields. The electron's magnetic moment arises from its intrinsic spin and orbital motion.
The magnetic moment of an electron, denoted by μ_e, is approximately equal to 9.284764 × 10^-24 joule per tesla (J/T), or equivalently, 5.788381 × 10^-5 electronvolt per tesla (eV/T).
The magnetic moment of an atom depends on the total angular momentum of its electrons, which includes both the orbital angular momentum and the spin angular momentum contributions. The total magnetic moment of an atom is typically given as the sum of the magnetic moments of its individual electrons.
It's important to note that the magnetic moment of an atom can vary depending on its electronic configuration and the presence of external magnetic fields. Therefore, the exact value of the magnetic moment of an atom depends on the specific atom in question.