Two p-block elements X and Y form fluorides of the type 
. The fluoride compound 
is a Lewis acid and 
is a Lewis base. The hybridizations of the central atoms of 
and 
respectively are
and 
and 
Text Solution
Verified by ExpertsA
is a Lewis acid, indicating the central atom X lacks a complete octet and can accept electron pairs. This is characteristic of Boron .
Boron in 
:
Valence electrons: 3
Steric number: 3 (three B-F bonds, no lone pairs)
Geometry: Trigonal planar
Hybridization: 
is a Lewis base, indicating the central atom Y has lone pair(s) available to donate. This is characteristic of Nitrogen (N).
Nitrogen in 
:
Valence electrons: 5
Steric number: 4 (three N-F bonds + one lone pair)
Geometry: Trigonal pyramidal
Hybridization: 
Therefore, the hybridizations are 
for 
(Boron) and 
for 
(Nitrogen).
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