A110 How many unpaired electrons is a chlorine atom in

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110. How many unpaired electrons is a chlorine atom in the normal and excited states? Distribute these electrons in the quantum cells. What is the valence of chlorine due to unpaired electrons?
The objectives of the manuals "Chemistry. Guidelines, work program and control tasks, "ed. prof. VA Averyanov, Part 1, Tula, 2004.

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