Match the rule to what it governs

Exercise and reference answers

Matching pairs

1. Left

   Aufbau principle

   Right

   Lowest energy level fills first

2. Left

   Hund's rule

   Right

   Orbitals half fill before pairing

3. Left

   Pauli exclusion

   Right

   At most two electrons per orbital

Instructions

Tap a rule on the left, then what it controls.