Question

why electrons are arranged in electronic configuration ​

Answer 1

Answer:

a maximum of two electrons are put into orbitals in the order of increasing orbital energy: the lowest-energy orbitals are filled before electrons are placed in higher-energy orbitals.

Answer 2

Answer:

electrons are arranged in shells around an atom's nucleus. Electrons closest to the nucleus will have the lowest energy. Electrons further away from the nucleus will have higher energy. ... An orbital diagram is used to determine an atom's electron configuration.