XeF₅⁻ has five bonding pairs and two lone pairs at xenon, an AX₅E₂ arrangement. The two lone pairs occupy opposite axial positions, leaving five fluorines in an equatorial pentagon. Thus D. IF₅ and XeOF₄ instead have square-pyramidal molecular shapes in the corresponding VSEPR treatment.
More Main Group Elements: Shapes and structures of molecules using VSEPR postulates, Hydrides, halides, oxides, oxoacids, nitrides, sulfides - shapes and reactivity. Structure and bonding of boranes, carboranes, silicones, silicates, boron nitride, borazine and phosphazenes: electron counting in polyhedral boranes, isolobal analogy. Allotropes of carbon, phosphorus and sulfur. Industrial synthesis of compounds of main group elements such as NH3, H2SO4 and HNO3. Chemistry of noble gases and interhalogen compounds. Acid-base concepts and principles (Lewis, Brønsted, HSAB and acid-base catalysis). questions
GATE 2020 CY Q58– Among [B 12H 12]2-, [Ni 5(CO) 12]2-, [C 2B 9H 11]2-, Rh 6(CO) 16, Os 6(CO) 20, B 5H 11 and…