Question

Which of the following is the correct electron configuration for an oxygen atom?

• A. \( 1s^2 2s^2 2p^4 \)
• B. \( 1s^2 2s^2 2p^6 \)
• C. \( 1s^2 2s^2 2p^5 \)
• D. \( 1s^2 2s^2 2p^3 \)

Hint:

Remember: Electron configuration follows the Aufbau principle, filling lower-energy orbitals first.