Which of the following property have been changed when all the oxygen atoms are replaced by fluorine atoms from ${\mathrm{XeO}}_3$ without changing the covalency of xenon?

A colourless, crystalline substance with the chemical formula ${\mathrm{XeO}}_3$, xenon trioxide is a gas. There are a total of 26 valance electrons in this. The total amount of lone pairs in this molecule is one of its features that cannot change under the given circumstances. $\mathrm{Xe}$ molecule hybridization, The molecule's shape