jee main chemistry important questions | Chemical Bonding And Molecular Structure

Q 11 :

Among $H_{2} S, H_{2} O, {NF}_{3}, {NH}_{3} and {CHCl}_{3},$ identify the molecule (X) with lowest dipole moment value. The number of lone pairs of electrons present on the central atom of the molecule (X) is : [2026]

(3)

$\begin{matrix} Molecule & Dipole moment \\ H_{2} S & 0.95 \\ H_{2} O & 1.85 \\ N F_{3} & 0.23 (minimum) \\ N H_{3} & 1.47 \\ C H C l_{3} & 1.04 \end{matrix}$

[IMAGE 178]

$Number of lone pair on central atom = 1$

Topic Question Set

Q 11 :

Among $H_{2} S, H_{2} O, {NF}_{3}, {NH}_{3} and {CHCl}_{3},$ identify the molecule (X) with lowest dipole moment value. The number of lone pairs of electrons present on the central atom of the molecule (X) is : [2026]

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