Problem: Only two electrons, with opposing spins, are allowed in each orbital is known as theA) Hund's ruleB) Heisenberg uncertainty principleC) Aufbau principleD) Pauli exclusion principle

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We are being asked to determine the theory stating that only two electrons, with opposing spins, are allowed in each orbital


Let’s define each given choice:


A) Hund’s rule states that electron orbitals that are degenerate (same energy) are first half-filled before they are totally-filled.

B) Heisenberg’s Uncertainty Principlestates that we cannot accurately determine both the position and velocity of an electron. 

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Problem Details

Only two electrons, with opposing spins, are allowed in each orbital is known as the

A) Hund's rule

B) Heisenberg uncertainty principle

C) Aufbau principle

D) Pauli exclusion principle

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