Chemistry · Periodic Classification
The electronic configuration of the most electronegative element among the following is:
- 11s2 2s2 2p4
- 21s2 2s2 2p6 3s2 3p5
- 31s2 2s2 2p5✓
- 41s2 2s2 2p6
Correct answer
1s2 2s2 2p5
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