The bond length and bond dissociation energy of ${\mathrm{H}}_2$ are $74\mathrm{pm}$ and $436{\mathrm{kJmol}}^{-1}$ respectively. Which one of the following graphs correctly represents the variation of energy (in $\mathrm{y}-$axis) with inter atomic distance (in x-axis) of ${\mathrm{H}}_2$ ?

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: