Question

Why transition elements have high melting and boiling point?

Answer 1

the transition elements have high melting and boiling points because there are 3D electrons are available to participate in the metallic bonding

Answer 2

Answer:

• The “melting and boiling points” of transition elements are high because their atoms are closely packed by the strong metallic bonds.
• This strength of the bond is due to the presence of unpaired or delocalized electrons in the outermost shell of the atom.
• This leads to the overlapping of$[tex](n-1)^{\prime} d^{\prime}$[/tex] orbital and covalent bonding of the non-paired electrons.
• The enthalpies of atomization and the densities of transition elements are also high that leads to high boiling and melting points.