Question

Which of the following statements is incorrect?

• A. $Zn , Cd$ and $Hg$ due to presence of completely filled $d$-orbitals $\left[(n-1) d^{10} n s^2\right]$ are not transition metals.
• B. $Zn , Cd$ and $Hg$ have low m.p and are comparitively softer than other transition metals.
• C. Metallic bond made by elements with $d^5$ configuration is stronger as compared to metalic bond made by elements with $d^\beta$ configuration.
• D. Metals of $5 d$ series forms strong metallic bonds as compared with metals of $3 d$ series.

Answer 1

Answer: (C)

Metallic bond made by elements with $d^5$ configuraiton can be stronger $( Cr )$ or weaker $( Mn )$ than that with $d^3$ configuration $(V)$.