Chemistry

Question Analysis
This question evaluates the student's understanding of Hund’s rule and how it applies to the electron configuration of nitrogen.

Key Concept Explanation
Hund’s rule states that electrons in degenerate orbitals (like p orbitals) will occupy separate orbitals with parallel spins before pairing up.

Step-by-step Solution
1. Determine the total number of electrons in a nitrogen atom (atomic number 7): 7 electrons.
2. Write the electron configuration: 1s² 2s² 2p³.
3. Apply Hund’s rule to the 2p orbitals: place one electron...