<p>(a) Why are fluorides of transition metals more stable in their higher oxidation state as compared to the lower oxidation state?</p>

<p>(b) Which one of the following would feel attraction when placed in magnetic field:&nbsp;<span class="equation">\(Co^{2+}, Ag^+, Ti^{4+}, Zn^{2+}\)</span></p>

<p>(c) It has been observed that first ionisation energy of 5d series of transition elements are higher than that of 3d and 4d series, explain why?</p>

<p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;OR</p>

<p>On the basis of the figure given below, answer the following questions:</p>

<p><img alt="" src="https://school.achievam.com/upload/questionbank/question/que_1759742183.png" style="height:120px; width:137px" /></p>

<p>(a) Why manganese has lower melting point than chromium?</p>

<p>(b) Why do transition metals of 3d series have lower melting points as compared to 4d series?</p>

<p>(c) In the third transition series, identify and name the metal with the highest melting point.</p>