Transition metals exhibit characteristically high melting and boiling points. Which specific factors — d and f Block Elements Chemistry Question

💡 Solution & Explanation

The high melting and boiling points of transition metals are attributed to incredibly strong interatomic metallic bonds. This bond strength arises from two sources: the typical delocalization of the outermost $ns$ electrons, and the substantial covalent overlap and sharing of the partially filled, unpaired $(n-1)d$ electrons. More unpaired electrons (up to a $d^5$ configuration) generally mean stronger bonding and higher melting points.