Chemistry (Year 11)
Atomic Structure
Which of the following is the correct electron configuration for chlorine?
1s² 2s² 2p⁶ 3s² 3p⁵
1s² 2s² 2p⁶ 3s²
1s² 2s² 2p⁶ 3s² 3p⁶
1s² 2s² 2p⁶ 3s² 4p⁵
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