Question

Write the rules of distribution of electrons in different shells with two examples.

want the answer urgently

Answer 1

The maximum number of electrons in different shells is as follows: The first orbit or K shell will have 2 × 1² = 2 electrons. The second shell will have 2 × 2² = 8 electrons. The third shell will have 2 × 3² = 18 electrons.

Electrons are placed in the lowest energetically available subshell. An orbital can hold at most 2 electrons. If two or more energetically equivalent orbitals are available

(example, p and d) then electrons should be spread out before they are paired up (Hund's rule)