Question

Accorfing to which rule maximum number of electrons in an orbital is equal to two ?

Answer 1

The maximum number of electrons in any shell is 2n2, where n is the principal quantum number. The maximum number of electrons in a subshell (s, p, d or f) is equal to 2(2ℓ+1) where ℓ = 0, 1, 2, 3...

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Answer 2

Pauli Exclusion Principle is the rule maximum number of electrons in an orbital is equal to two.

What is Pauli Exclusion Principle?

• According to Pauli's Exclusion Principle, Every electron should be Unique.
• It means that every electron should have a different value for all the quantum numbers as compared to other electrons.
• Pauli Exclusion Principle also states that two-electron residing in the same orbital must have opposite spins.
• Pauli Exclusion Principle has vital Importance in the field of chemistry as it helps us to understand the arrangement of electrons in atoms.