Which d-block element is expected to have the | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(C) Enthalpy of atomisation is the energy required to break all the bonds in one mole of a substance to obtain atoms in the gaseous phase.Transition e

Vedclass · Accepted Answer

$V$

Vedclass · Answer

(C) Enthalpy of atomisation is the energy required to break all the bonds in one mole of a substance to obtain atoms in the gaseous phase.Transition elements exhibit high enthalpies of atomisation due to strong metallic bonding resulting from the presence of unpaired electrons in their $(n-1)d$ orbitals.As we move across a $3d$ series,the number of unpaired electrons increases up to $d^5$ configuration,leading to stronger metallic bonding and higher enthalpy of atomisation.Among the given options,$V$ $(3d^3 4s^2)$ has more unpaired electrons than $Sc$ $(3d^1 4s^2)$ and $Mn$ ($3d^5 4s^2$ is an exception due to stable half-filled configuration,but $V$ generally shows higher values in specific contexts or comparisons),while $Zn$ $(3d^{10} 4s^2)$ has no unpaired electrons,resulting in the lowest enthalpy of atomisation.Thus,$V$ is expected to have a high enthalpy of atomisation.

Which $d-$block element is expected to have the highest enthalpy of atomisation among the following?

Similar Questions

The metal that shows the highest and maximum number of oxidation states is:

Which of the following oxides is white but becomes yellow on heating?

The transition metals are mostly

Which of the following pairs of elements does $NOT$ include transition elements?

Why do $CrO_3$ and $V_2O_5$ have low melting points?

Vedclass Test Series

Exam Paper Generator

Online Exam Module