Chapter 2 of 20 · Chemistry

Atomic Structure

Atomic Structure is a Chemistry chapter on the official PMDC MDCAT 2026 syllabus, contributing roughly 3 MCQs to the 45-MCQ Chemistry section. Mastering the core concepts below typically secures the full chapter weightage.

Key Concepts

• Bohr's model
• Quantum numbers
• Electronic configuration
• Aufbau, Hund, Pauli
• Photoelectric effect

How Atomic Structure Is Tested

MDCAT questions on Atomic Structure are a mix of recall (definitions, classifications), application (predict outcomes, interpret diagrams), and basic numerical/analytical reasoning. PMDC papers from 2020–2025 emphasized the concepts above; older UHS papers (2008–2019) tested them too, with slight variations in question framing.