Concept: An electron is a charged particle. According to electromagnetic theory, a spinning charge generates a magnetic field.
Formula: None required.
Solution: - When two electrons occupy the same orbital, they are forced into close physical proximity, leading to immense electrostatic repulsion (since both are negatively charged).
- However, if they spin in opposite directions (one up, one down), they act like tiny bar magnets with anti-parallel alignment.
- Their opposing magnetic fields attract each other slightly, which partially counteracts the electrostatic repulsion, allowing the system to achieve a stable state.
Why other options are incorrect: Subatomic particles do not experience macroscopic "friction". Opposite spins lower the system's energy (increasing stability), they don't "create" energy. Spin does not remove intrinsic electric charge.
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