Which set of compounds in the following pair | vedclass

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

Question

(D) Lattice energy depends upon two main factors:$1$. Charge on the ions: Greater the charge,higher is the lattice energy.$2$. Size of the ions: Small

Vedclass · Accepted Answer

$MgO, LiF, Mg_3N_2$

Vedclass · Answer

(D) Lattice energy depends upon two main factors:$1$. Charge on the ions: Greater the charge,higher is the lattice energy.$2$. Size of the ions: Smaller the size of the ions,higher is the lattice energy.$(i)$ Comparing $KCl$ $(K^+, Cl^-)$ and $MgO$ $(Mg^{2+}, O^{2-})$: $MgO$ has higher ionic charges and smaller ionic radii compared to $KCl$,so $MgO$ has higher lattice energy.$(ii)$ Comparing $LiF$ $(Li^+, F^-)$ and $LiBr$ $(Li^+, Br^-)$: Both have the same cation charge,but $F^-$ is smaller than $Br^-$,so $LiF$ has higher lattice energy.$(iii)$ Comparing $Mg_3N_2$ $(Mg^{2+}, N^{3-})$ and $NaCl$ $(Na^+, Cl^-)$: $Mg_3N_2$ has significantly higher ionic charges,so it has higher lattice energy.Thus,the set with higher lattice energy is $MgO, LiF, Mg_3N_2$.

$A$. $Pa \cdot s$	$(i)$ $[L^2 \ T^{-2} \ K^{-1}]$
$B$. $N \cdot m \cdot K^{-1}$	$(ii)$ $[M \ L \ T^{-3} \ K^{-1}]$
$C$. $J \cdot kg^{-1} \cdot K^{-1}$	$(iii)$ $[M \ L^{-1} \ T^{-1}]$
$D$. $W \cdot m^{-1} \cdot K^{-1}$	$(iv)$ $[M \ L^2 \ T^{-2} \ K^{-1}]$

Which set of compounds in the following pair of ionic compounds has the higher lattice energy?
$(i) \, KCl$ or $MgO$ $(ii) \, LiF$ or $LiBr$ $(iii) \, Mg_3N_2$ or $NaCl$

Similar Questions

$A$ disc has mass $M$ and radius $R$. How much tangential force should be applied to the rim of the disc,so as to rotate with angular velocity $\omega$ in time $t$?

Bell metal is an alloy of which of the following?

The correct order of decreasing third ionisation enthalpy of $Ti, V, Cr, Mn$ is

If $y=y(x)$ is the solution of the differential equation $\left(\frac{2+\sin x}{y+1}\right) \frac{d y}{d x}+\cos x=0$ with $y(0)=1$,then $y\left(\frac{\pi}{2}\right)$ is equal to

Vedclass Test Series

Exam Paper Generator

Online Exam Module

Which set of compounds in the following pair of ionic compounds has the higher lattice energy?$(i) \, KCl$ or $MgO$ $(ii) \, LiF$ or $LiBr$ $(iii) \, Mg_3N_2$ or $NaCl$