Question

which one has zero dipole moment (a)H2o (b)NH3 (c)ccl4 (d)so2​

Answer 1

Answer:

CCl4

Explanation:

As Cl group is more electronegative than C so as per the structure the resultant dipole moment are relatively opposite to each other.

Answer 2

The compound with zero dipole moment among the given compounds is Carbon Tetrachloride. Hence option (c) is correct.

• Carbon has an electronegativity value of 2.55 whereas the electronegativity value of chlorine atom is 3.16.
• Chlorine is more electronegative than carbon and so the carbon-chlorine bond exhibits polarity.
• There are four such polar carbon-chlorine bonds in the carbon tetrachloride molecule.
• The carbon in CCl₄ is $sp^{3}$ hybridized with a tetrahedral structure, which is symmetrical. So the four polar bonds are arranged such that the dipole moments get nullified and the molecule as a whole is non-polar.