Which of the following statements is not correct?

Question

$\begin{array}{1 1}\text{Halides formed with nonmetals are covalent in nature}\\\text{The reactivity of halogens decreases with increasing atomic number}\\\text{Hydrogen halides are ionic molecules in the gaseous phase}\\\text{Metals with low ionization energies form ionic halides while those of high ionization energies form covalent molecules}\end{array}$