Question
4
For the four compounds in question 3 deduce the polarity
of the bonds and of the overall molecules. Justify your
conclusions.
Answer
Compound 1: HCl - The bond between hydrogen and chlorine is polar covalent due to the difference in electronegativity between the two atoms. The molecule is polar due to the unequal sharing of electrons between the two atoms.
Compound 2: CO2 - The bonds between carbon and oxygen are polar covalent due to the difference in electronegativity between the two atoms. However, the molecule is nonpolar because the two polar bonds are symmetrical and cancel each other out.
Compound 3: NH3 - The bonds between nitrogen and hydrogen are polar covalent due to the difference in electronegativity between the two atoms. The molecule is polar due to the unequal sharing of electrons between the two atoms.
Compound 4: H2O - The bonds between hydrogen and oxygen are polar covalent due to the difference in electronegativity between the two atoms. The molecule is polar due to the unequal sharing of electrons between the two atoms.