I have a very limited knowledge of the quantum but I was wondering if

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I have a very limited knowledge of the quantum but I was wondering if it was possible, barring probability, that two electrons could end up co-locating or being in the same place at once.
 
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They could have opposite spins.
 


Please elaborate. Also what keeps any other atomic sized or lesser particle from co-locating, if it in fact does? I'm just curious.
 


The Pauli Exclusion Principle that all fermions obey.
 
Insights auto threads is broken atm, so I'm manually creating these for new Insight articles. Towards the end of the first lecture for the Qiskit Global Summer School 2025, Foundations of Quantum Mechanics, Olivia Lanes (Global Lead, Content and Education IBM) stated... Source: https://www.physicsforums.com/insights/quantum-entanglement-is-a-kinematic-fact-not-a-dynamical-effect/ by @RUTA
If we release an electron around a positively charged sphere, the initial state of electron is a linear combination of Hydrogen-like states. According to quantum mechanics, evolution of time would not change this initial state because the potential is time independent. However, classically we expect the electron to collide with the sphere. So, it seems that the quantum and classics predict different behaviours!

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