Chemical BondingHard
Question
Identify the molecule $(X)$ with maximum number of lone pairs of electrons (obtained using Lewis’s dot structure) among ${HNO}_{3},H_{2}{SO}_{4},{NF}_{3}$ and $O_{3}$. Choose the correct bond angle made by the central atom of the molecule (X).
Options
A. $120^{\circ}$
B.$107^{\circ}$
C.$102^{\circ}$
D.$116^{\circ}$
Solution
${NF}_{3}$ 
hybridization: sp3
Number of lone pair in ${NF}_{3} = 10$
Bond angle in ${NF}_{3} \approx 102^{\circ}$
List-I
Functional group (detection)
(A) Unsaturation (Baeyer's test)
(B) Alcoholic group (Ceric ammonium nitrate test)
(C) Aldehyde group (Tollen's reagent)
(D) Phenolic group ( ${FeCl}_{3}$ test)
List-II
Change observed during detection
(I) Red colour Appears
(II) Silver mirror appears
(III) Violet colour appears
(IV) Discharge of pink colour
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