Question

how does filling up of electron takes place? please guys help me to solve this question. ​

Answer 1

According to the principle, electrons fill orbitals starting at the lowest available energy states before filling higher states (e.g., 1s before 2s). The Madelung energy ordering rule: Order in which orbitals are arranged by increasing energy according to the Madelung Rule.

Answer 2

$\huge{QUESTION :-}$

how does filling up of electron takes place?

$\huge{ANSWER :-}$

According to the principle, electrons fill orbitals starting at the lowest available energy states before filling higher states (e.g., 1s before 2s).

The Madelung energy ordering rule: Order in which orbitals are arranged by increasing energy according to the Madelung Rule.