Assuming $\mathrm{AB}$ is an ionic compound and ${\mathrm{r}}_{\mathrm{c}}, {\mathrm{r}}_{\mathrm{a}}$ are the ionic radii of ${\mathrm{A}}^{+}$and ${\mathrm{B}}^{-}$respectively. The lattice energy of the compound $\mathrm{AB}$ is proportional to:

The bond lengths (in $\mathrm{pm})$ of $\mathrm{C}-\mathrm{C}\text{,} \mathrm{C}\equiv \mathrm{C}$ and $\mathrm{C}=\mathrm{C}$ are:

Arrange the following ions in the correct order of $\mathrm{X}-\mathrm{O}$ bond order. where $\text{'}\mathrm{X}\text{'}$ denotes the central atom.

The hybridization of the central atom in the species $1{\mathrm{Cl}}_2^{+}$ is $\underline{ }$
 

Which of the following statements is false: