Electron configuration

https://www.youtube.com/watch?v=9ogq50CBgCg

Rules for filling atomic orbitals

Orbitals with the lowest energy are filled first

We can have up to two electrons in the same orbtials, must have opposite spins.

If we have orbitals with the same energy, then we can put electrons into individual orbitals before we pair them. That is because electrons in the same orbital repel.

Whats the electron configuration for nitrogen

The first 2 electrons go into 1s subshell, The next 2 electrons go into the 2s subshells.

All of the p orbitals in the 2p subshell have the same energy . So each electron goes into individual orbitals in the 2p subshell. Electron configuration for nitrogen is 1s² 2s² 2p³

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