Which of the following alloys is used to make statues?

The electronic configuration of $Cr^{3+}$ is

Determine whether the following statements are True $(T)$ or False $(F)$:
$(a)$ An element or its ion that does not have a completely filled $d$-orbital is considered a transition element.
$(b)$ $Sc$ is a transition element.
$(c)$ $Zn$ is a transition element.
$(d)$ The energy difference between $(n-1)d$ and $ns$ orbitals is high.

Which one of the following belongs to the $3d-$ transition series?

The decrease in atomic volume from $Cr$ to $Cu$ in the $3d$ series is very negligible because:

Transition elements are more metallic than representative elements ($s-$ and $p-$ block elements) due to