Which out of the following will have maximum dipole moment?
Option 1) CO2
Option 2) CH4
Option 3) NH3
Option 4) NF3
As we learnt in
Resultant dipole moment -
Let XY and XZ are two polar bonds inclined at an angle their dipole moments are
- wherein
Zero dipole moment -
A molecule having two or more polar bonds may have zero net when the molecule has regular structure
- wherein
Example:-
In NH3, H is less electronegative than N and hence dipole moment of each N—H bond is towards N and create high net dipole moment, where as in NF3, F is more electronegative than N, the dipole moment of each N—F bond is opposite to that of lone pair hence reducing the net dipole moment.
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