Chemistry - CHEMICAL BONDING Question with Solution | TestHub

Boric acid accepts water/OH donation at B to give tetrahedral borate, changing sp² to sp³, A. Diborane and its tertiary-amine adduct have sp³ B environments in the source model, so B does not change. P remains tetrahedral during phosphoric-acid condensation, so C does not change. Underlined C changes from linear sp in CO₂ to trigonal sp² in carbonic acid, D. Answer A,D.