See image — AITS & Test Series Chemistry Question

💡 Solution & Explanation

(I) Formation of Na[Al(OH)4] (II) 2 6 B H  O  B H H H O  SP3 SP3 (III) 3 3 2 4 2 6 sp sp d SiF HF H SiF   (IV) 3 3 3 2 5 4 6 sp d sp sp d PCl PCl PCl        