Question

the lowest energy orbitals are filled first -who proposed this formula​

Answer 1

Answer:

Niels bohr and wolfgang pauli in the early 1920

Answer 2

The Aufbau principle states that the lowest energy orbitals are filled first by the electrons.

• According to the Aufbau principle, the electrons are filled in the increasing order of the orbital energy level when the atom is in the ground state.
• Aufbau principle gives the sequence in which orbitals are filled with electrons.
• This principle was formulated by the scientist Niels Bohr.
• In the hydrogen-like atoms, all the orbitals of a subshell are at the same energy level.