Question

which rule is violated in the electronic configuration of 1s^0 2s^2 2p^6​

Answer 1

Question :

which rule is violated in the electronic configuration of 1s^0 2s^2 2p^6

Answer

Aufbau's principle

Explanation:

The aufbau principle, from the German Aufbau(meaning to build), also called the aufbau rule, states that in the ground state of an atom or ion, electrons fill atomic orbitals of the lowest available energy levels before occupying higher levels.

As energy of

${1s}$<${2s}$<${2p}$

so electrons will fill first in 1s orbital

which is not not case in the question