Respuesta :

The idea that only one electron in an atom can exist in a given quantum energy state is known as the Pauli exclusive principle .

The quantum state of a particle is defined bu the values of the quantum numbers , so what this means is that no two electrons in the same atoms can have the same set of quantum number . This is known as the  Pauli exclusive principle , named after the German physicist Wolfgang Pauli .

All transition emit one quantum ( one photon ) of energy , but an energy to lower energy is released .

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