Question

Among the following which one is a linear molecule having zero dipole moment?

• A. $H_{2}O$
• B. $HCl$
• C. $CO_{2}$
• D. $H_{2}S$

Answer 1

Answer: (C)

$CO_{2}$

Answer 2

$CO_2$ is a linear molecule. It has zero dipole moment due to its symmetrical structure.
$O=C=O;\,\theta =180^{\circ}$ and $\mu =0$