If more than one degenerate orbitals are available then electrons go one by one with same spin. According to which rule:
Correct answer: A. Hund's rule
- A. Hund's rule
- B. Pauli exclusion principle
- C. Aufbau principle
- D. n+l rule
Explanation
Option A is correct.If more than one degenerate orbitals are available then electrons go one by one with same spin is called hund's rule.The rule states that electrons go one by one with the same spin in degenerate orbitals and is called Hund's rule of maximum multiplicity. This rule states that electrons will occupy degenerate orbitals singly before they pair up, and that they will have the same spin in each orbital. This is because electrons have a property called spin, which can be either up or down.The Pauli exclusion principle states that no two electrons in an atom can have the same four quantum numbers. This means that if two electrons are in the same orbital, they must have different(opposite) spins.
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