Chemistry (Year 11)
Electron Configuration
Which of the following is the correct electron configuration for a chlorine atom?
1s2 2s2 2p6 3s2 3p5
1s2 2s2 2p4
1s2 2s2 2p6 3s2 3p6
1s2 2s2 2p6 3s2 3p4
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