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Which element configuration is 1s2 2s2 2p6 3s2 3p5
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Which element configuration is 1s2 2s2 2p6 3s2 3p5

User Tabdulradi
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Chlorine.

You can work this out by counting along the periodic table in rows. Chlorine falls as the 5th element in the 3rd down row of the p block (left hand side) of the periodic table.
User CathalMF
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what is the position of an element in the periodic table if its electrons configuration is 1s2 2s2 2p6 3s2 3p5?
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