Chemistry (Year 12)
Atomic Structure
What is the electron configuration of a neutral sulfur atom?
1s² 2s² 2p⁶ 3s² 3p⁴
1s² 2s² 2p⁶ 3s² 3p³
1s² 2s² 2p⁶ 3s² 3p²
1s² 2s² 2p⁶ 3s² 3p⁵