Why do we considered member 1/2 before mutual interactions between electrons and nucleus , but do not take into account when we consider electron and nucleus? Very useful lection, thank you!
The interaction between electron 1 and electron 2 is the same as the interaction between electron 2 and electron 1. Electrons are indistinguishable. The interaction between nucleus 1 and electron 2 is not the same as the interaction between nucleus 2 and electron 1.
Why do we considered member 1/2 before mutual interactions between electrons and nucleus , but do not take into account when we consider electron and nucleus? Very useful lection, thank you!
Lections*
The interaction between electron 1 and electron 2 is the same as the interaction between electron 2 and electron 1. Electrons are indistinguishable. The interaction between nucleus 1 and electron 2 is not the same as the interaction between nucleus 2 and electron 1.