Which of the following has the highest melting point?

The maximum and minimum melting points $(m.p.)$ of the $1^{st}$ transition series and $2^{nd}$ transition series respectively are obtained with:

Which of the following have a melting point below $500\,^{\circ}C$?

In the first transition series,the melting point of $Mn$ is low because

Describe the $(a)$ metallic properties and $(b)$ lattice structures of transition elements.

In the series $Sc (Z = 21)$ to $Zn (Z = 30)$,the enthalpy of atomization of . . . . . . is the lowest.