An element A occupies group number 17 and period number 2, is the most electronegative element. Element A reacts with another element B, Which occupies group number 17 and period number 4, to give a compound C. CompoundC undergoes sp^3 d^2hybridisation and has octahedral structure. Identify the elements A and B and the compound C. Write the reactions.

An element A occupies group number 17 and period number 2, is the most

1.	An element A occupies group number 17 and period number 2, is the most electronegative element. Element A reacts with another element B, Which occupies group number 17 and period number 4, to give a compound C. CompoundC undergoes sp^3 d^2hybridisation and has octahedral structure. Identify the elements A and B and the compound C. Write the reactions.
Answer» Solution :(i) The element of group number 17 and period number 2 is fluorine (A). (ii) The element of group number 17 and period number 4 is BROMINE (B). (III) (A) and (B) react to give an interhalogen COMPOUND (C) bromine penta fluoride. `UNDERSET((A)) (Br_(2))+underset((B))(5F_(2)) rarr underset((C))(2BrF_(5))` (C) undergoes `sp^(3)p^(2)` hybridisation and has octahedral structure.