Answer and Explanation:
(a) Phosphorus tribromide : The chemical formula for phosphorus tribromide is [tex]PBr_3[/tex]
(b) Dintrogen tetrafluoride : The chemical formula for dinitrogen tetrafluoride is [tex]F_4N_2[/tex]
(C) Xenon oxide : the chemical formula for xenon oxide is [tex]XeO_4[/tex]
(D) Selenium trioxide ; the chemical formula for selenium trioxide is [tex]SeO_3[/tex]