21. This is equivalent to satisfying the Pauli exclusion principle . 22. For fermions, it is sometimes called "'Pauli repulsion "'and related to the Pauli exclusion principle . 23. Following the Pauli exclusion principle , there can be only one fermion occupying each quantum state. 24. The Pauli exclusion principle gives rise to exchange interactions. 25. An energy associated with the Pauli exclusion principle . 26. The motivation for introducing dual numbers into physics follows from the Pauli exclusion principle for fermions. 27. The Pauli Exclusion Principle is a quantum-mechanical effect. 28. The Pauli exclusion principle requires that the electron be lifted into the higher anti-bonding state of that bond. 29. Because electrons are fermions, the Pauli exclusion principle forbids these particles from having exactly the same quantum numbers. 30. The Pauli exclusion principle states that no two gravitational, electromagnetic, etc . ), only the Pauli exclusion principle .