<p>Observed and calculated values for the standard electrode potentials of elements from Ti to Zn in the first reactivity series are depicted in the given figure:</p>

<p><img alt="" src="https://school.achievam.com/upload/questionbank/question/que_1759742617.png" style="height:120px; width:176px" /></p>

<p>Explain the following observations:</p>

<p>(i) The general trend towards less negativve&nbsp;<span class="equation">\(E^{0}\)</span>&nbsp;values across the series.</p>

<p>(ii) The unique behaviour of copper.</p>

<p>(iii) More negative&nbsp;<span class="equation">\(E^0\)</span>&nbsp;values of Mn and Zn.</p>