Chemistry - CHEMICAL BONDING Question with Solution | TestHub

NH₄⁺ has no lone pair and a tetrahedral angle. NH₃ has one lone pair and a smaller angle; NH₂⁻ has two and a further reduced angle. Thus B. Nitrogen oxide order is NO₂⁺>NO₃⁻>NO₂⁻, not A. The phosphorus-halide and fluorine-oxide orders in C,D are reversed relative to the intended comparisons.