<p>(i) Why are melting points of transition metals high?</p>

<p>(ii) Why the transition metals generally form coloured compounds?</p>

<p>(iii) Why&nbsp;<span class="equation">\(E^0\)</span>&nbsp;value for <span class="equation">\(Mn^{3+}/Mn^{2+}\)</span>&nbsp;couple is highly positive?​​​​​​​</p>