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What is the repeating unit in the conden...

What is the repeating unit in the condensation polymer obtained by combining `HO_(2)"CC"H_(2)CH_(2)COOH` (succinic acid) and `H_(2)NCH_(2)CH_(2)NH_(2)` (ethylene diamine)?

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The repeating structural unit is obtained by condensing at both ends of both the bifunctional molecules, i.e., succinic acid `(HOOCCH_(2))` and ethylendiamine with the elimination of water molecules, i.e., `-OC CH_(2)CH_(2)CO-NHCH_(2)CH_(2)NH-`.
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