While reading "Francis A. Carey, Richard J. Sundberg - Advanced Organic Chemistry Part A. Structure and Mechanisms-Springer (2007)", I came across the following:
The paragraph says that there are two major reasons for electron pairs repelling each other.
- Electrostatic repulsion
- Pauli exclusion principle
Now, the statement says that, in accordance with the Pauli exclusion principle, only two electron can occupy the same point in space and that those two electrons must have opposite spins. However, as far as I know, that is not the statement of Pauli exclusion principle, or is it equivalent to the following statement?
No two electrons can have the same four quantum numbers.
This is a tricky question, since we really shouldn't be talking about electrons occupying a single point in space (given the uncertainty principle). Also, wouldn't electrostatic repulsion be enough to assert that no two electrons can occupy the same point in space regardless of the spin?