SF P2 42

1>A,B
2>C
3>D
4>B

these kinda questions are very confusing...they shud specify whether they are asking the hybridisation of only the central element or the hybridisations of all the elements in that compound...
1 borax..it contains 2 sp² hybridised boron and 2 sp³ hybridised boron and oxygen is sp³ hybridised..

2 PCl₅ solid....(the word solid here means u have to consider it's lattice..[PCl₄]⁺ tetrahedral and [PCl₆]^- octahedral....

3 H₄IO₆^- contains sp³d² hybridised I and sp³ hybridised O

4. N₃P₃Cl₆ contains sp² hybridised N and sp³ hybridised P

1→ A,B
2→ B,D
3→ B,D
4→ A,B

Ya Actually even I made a mistake and gave an answer like Avinav's & was wondering about the ans given

Thanks Govind