Which rule shows us that we have to add electrons singly to orbitals until each has one before we start pairing? Options: A . &nbspHund's Rule B . &nbspPauli Exclusion C . &nbspAufbau Principle D . &nbspPaschen Series

Which rule shows us that we have to add electrons singly to orbitals until each

Question

Which rule shows us that we have to add electrons singly to orbitals until each has one before we start pairing?

Options:

A . Hund's Rule

B . Pauli Exclusion

C . Aufbau Principle

D . Paschen Series

Answer: Option A

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