Draw the electron dot structures for each molecule. identify polar covalent bonds by assigning slightly positive and slightly negative symbols to the appropriate atoms.

a. hooh
b. brcl
c. hbr
d. h2o

The electron dot structure for each molecule are:
        ..  ..
a. H:O:O:H
        ..  ..
The partial negative charges are on the Oxygen atoms.

        ..
b. H:Cl:
        ..
The partial negative charge is on the Chlorine atom.

        ..
c. H:Br:
       .. 
The partial negative sign is on Bromine atom.

        ..
d. H:O:H
        ..
The partial negative sign is on the Oxygen atom.