Chemistry

Question Analysis
This question evaluates the student's understanding of electron configuration and the application of Hund’s rule.

Key Concept Explanation
Nitrogen has 7 electrons. The electron configuration must follow the Aufbau principle, Pauli exclusion principle, and Hund’s rule.

Step-by-step Solution
1. Determine total electrons: For a neutral N atom, atomic number = 7 = number of electrons.
2. Fill orbitals in order:
1s orbital (lowest energy) holds 2 electrons: 1s²
2s orbital holds next 2 electrons: 2s²
Remaining 3...