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Chapter 6: Q. 6.84 (page 203)

The molecules CH4and CH3Clboth have tetrahedral shapes. Why is CH4 nonpolar whereas CH3Cl is polar?

Short Answer

Expert verified

CH4is nonpolar and CH3Cl is polar due to dipole moment.

Step by step solution

01

Given information

We are given that both CH4and CH3Cl have tetrahedral shape.

02

Simplify

In CH4all of the atoms around the centre element (carbon) in a molecule of methane are equal (four hydrogens), and thus has a net dipole moment of 0. (vectors of dipole moments cancel each other, dipole moment is zero). but There are various elements (one chlorine and three hydrogen atoms) surrounding the centre atom (carbon) in the chloromethane CH3Clmolecule, and thus has a greater net dipole moment. Therefore CH4is nonpolar whereas CH3Cl is polar.

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