Question

Question #bc771

Answer 1

Look at the chemical species to predict the dipole moment or find the electronegativity difference among the bonding species.

Explanation:

Find species dipole moment:

Consider a graphic of `COH_2` where the dipoles between the bonded species are depicted by black arrrows `->`, and the net dipole is shown below.

When there is a net dipole among the species, it will be a polar species .

As we can see from the dipole moment, the `COH_2` species is a polar one.

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You could also use the Pauling scale of electronegativity to find the `ΔEN` between the bonded species:

Consider a molecule of Fluorine gas, `F_2`

the `ΔEN = 3.98-3.98 = 0` in the `F-F` bond.

The species is not polar.

See the link below for more information on the electronegativity difference:
https://socratic.org/questions/how-can-i-kiss-if-the-electronegativity-difference-is-ionic-polar-covalent-or-no#347261