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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