Question

The elements of the three transition series of the d-block are given below `:`
`{:(Sc,Ti,V,Cr,Mn,Fe,Co, Ni,Cu,Zn),(Y,Zr,Nb,Mo,Tc,Ru,Rh,Rd,Ag,Cd),(La,Hf,Ta,W,Re,Os,Ir,Pt,Au,Hg):}`
In any transition, as we move from left to right,the d-orbital sare progressively filled and their properties vary accordingly .
Which element out of the following do you expect tohave the lowest melting point ?
A. Cr
B. Mn
C. Fe
D. Co

Answer 1

Mn has low melting point due to exactly half filled d-orbitals , i.e., stable electronic configuration and hence weak metallic bonds.