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4. Chemical bonding and molecular structure — Chemistry STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceChemistry4. Chemical bonding and molecular structure1 Mark
MCQ
The incorrect order of lattice energy is
  • A
    $AlF_3 > MgF_2$
  • B
    $Li_3N > Li_2O$
  • C
    $NaCl > LiF$
  • D
    $TiC > ScN$
✓

Answer

$(c) LE\propto \begin{matrix}
   {{q}^{+}}\,+{{q}^{-}}  \\
   {{r}^{+}}+{{r}^{-}}  \\
\end{matrix}$

$(a)\, AlF_3 > MgF_2$ [Charge on cation]
$(b)\, Li_3N > Li_2O$ [Charge on anion]
$(c)\, NaCl >  LiF$ [Size of cation and anion]
$(d)\, TiC > ScN$ [Charge on cation and anion]

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