Number of compounds/species from the following with non-zero dipole moment is $\mathrm{BeCl}_{2}$, $\mathrm{BCl}_{3}$, $\mathrm{NF}_{3}$, $\mathrm{XeF}_{4}$, $\mathrm{CCl}_{4}$, $\mathrm{H}_{2}\mathrm{O}$, $\mathrm{H}_{2}\mathrm{S}$, $\mathrm{HBr}$, $\mathrm{CO}_{2}$, $\mathrm{H}_{2}$, $\mathrm{HCl}$

JEE Main · 2024 · 04 Apr 2024 · Shift 2 · Chemical Bonding and Molecular Structure

Number of compounds/species from the following with non-zero dipole moment is

BeCl_{2}

BCl_{3}

NF_{3}

XeF_{4}

CCl_{4}

H_{2} O

H_{2} S

HBr

CO_{2}

H_{2}

HCl

Answer: 5

Non-polar (zero dipole moment, symmetric) species:

B e C l_{2}

(linear),

B C l_{3}

(trigonal planar),

X e F_{4}

(square planar),

C C l_{4}

(tetrahedral),

C O_{2}

(linear),

H_{2}

(homonuclear diatomic) — 6 species.
Polar (non-zero dipole moment) species:

N F_{3}

(pyramidal),

H_{2} O

(bent),

H_{2} S

(bent),

H B r

H C l

(heteronuclear diatomics) — 5 species.

JEE Main · 2024 · 04 Apr 2024 · Shift 2 · Integer answer