Orbital motion (quantum)
Encyclopedia
Electrons don’t actually move in their orbitals. When quantum mechanics
Quantum mechanics
Quantum mechanics, also known as quantum physics or quantum theory, is a branch of physics providing a mathematical description of much of the dual particle-like and wave-like behavior and interactions of energy and matter. It departs from classical mechanics primarily at the atomic and subatomic...

 refer to “electron orbital motion” they are actually referring to the spatial wave function of the electron.

Just as spin
Spin (physics)
In quantum mechanics and particle physics, spin is a fundamental characteristic property of elementary particles, composite particles , and atomic nuclei.It is worth noting that the intrinsic property of subatomic particles called spin and discussed in this article, is related in some small ways,...

 doesn’t mean the particle is actually spinning around an axis in the classical sense, orbital motion doesn’t mean the particle is revolving around the nucleus
Atomic nucleus
The nucleus is the very dense region consisting of protons and neutrons at the center of an atom. It was discovered in 1911, as a result of Ernest Rutherford's interpretation of the famous 1909 Rutherford experiment performed by Hans Geiger and Ernest Marsden, under the direction of Rutherford. The...

 in the sense of the Bohr model
Bohr model
In atomic physics, the Bohr model, introduced by Niels Bohr in 1913, depicts the atom as a small, positively charged nucleus surrounded by electrons that travel in circular orbits around the nucleus—similar in structure to the solar system, but with electrostatic forces providing attraction,...

. Likewise, the orbital angular momentum is a quantum value
Azimuthal quantum number
The azimuthal quantum number is a quantum number for an atomic orbital that determines its orbital angular momentum and describes the shape of the orbital...

inherent in the electron’s orbital energy state, even though nothing is moving in the classical sense. Furthermore, current loops caused by this orbital motion are also linguistic licence on the part of physicists, because there is neither current (movement of a charge) nor looping going on; but, the mathematical description is very much like that of a classic current loop. Orbital omtion itself contains with two forces- gravitational pull and forwards motion.

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