AP Chemistrymediummcq1 pt
The electron configuration of a ground-state oxygen atom is:
A.1s² 2s² 2p³ 3s¹
B.1s² 2s² 2p⁴
C.1s² 2s² 2p⁶
D.1s² 2s¹ 2p⁵
Explanation
Core Concept
Oxygen has 8 electrons. Following the Aufbau principle, the configuration is 1s² 2s² 2p⁴.
Correct Answer
B1s² 2s² 2p⁴
Practice more AP Chemistry questions with AI-powered explanations
Practice Unit 1: Atomic Structure and Properties Questions →