CAIE A-Level Chemistry A2 35.1.3 The Repeat Unit of a Condensation Polymer Topic Practice

Copper is a transition element and has atomic number 29.

Under certain conditions, ethane-1,2-diamine reacts with ethanedioic acid, $\mathrm{HO}_{2} \mathrm{CCO}_{2} \mathrm{H}$, to form the polymer Z.

Draw the structure of this polymer, Z, showing two repeat units.