Question

Does anyone know how electron configuration works? I need a good explanation pls (maybe with an example) thank you

Answer 1

Electron configuration shows how electrons are arranged in an atom’s energy levels (or shells), sublevels, and orbitals.

Electrons fill these in a specific order, starting from the lowest energy level to the highest — this is called the Aufbau principle.

Answer 2

Electron configuration shows how electrons are arranged in "shells" around an atom's nucleus, starting with the closest shell first. Each shell can only hold a certain number of electrons (max: 2 in the first, 8 in the second). Ex. oxygen has 8 electrons, so its configuration is 2, 6. 2 in the first shell and 6 in the second.

Answer 3

1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6