Which of the following statements is incorrect?

${\text{CH}}_{\text{4}}$ has highest bond angle.

(1)
 
(2)  ${\text{O}}_{\text{2}}^{\text{+}}{\text{(2.5)>O}}_{\text{2}}{\text{(2)>O}}_{\text{2}}^{\text{-}}{\text{(1.5).}}_{\text{2}}^{\text{2-}}\text{(1)}$
(3) Small size, more electrongativity, strength of H-bond is more.
 ${\text{HF>H}}_{\text{2}}{\text{O>NH}}_{\text{3}}\text{>HCl}$
(4) ${{\mathrm{O}}^{2-}}_2$ ( Bond order – 1), ${\mathrm{O}}_2^{-1}$ (Bon dorder – 1.5), N₂ (3) and O₂ (2).
        Greater the bond order greater is the bond enthalpy