Practice: Arrange the following molecules in order of decreasing dipole moment.
H–I H–F H–Br H–Cl
Dipole arrows are used anytime a molecule possesses a dipole moment, which happens when a molecule is polar.
Electronegativity and Dipole Moment
Concept #1: Electronegativity
Moving towards the top right corner of the Periodic Table causes Electronegativity to increase.
Example #1: Which of the following represents the most electronegative alkaline earth metal?
Concept #2: Dipole Moment
Example #2: Calculate the difference in electronegativity values between carbon and fluorine.
Concept #3: Further Chemical Bond Classifications
Example #3: For those listed below, which has the most polar bond?
Practice: Which of the following correctly identifies the chemical bond between a carbon and oxygen atom?
a) Polar Covalent
b) Pure Covalent
c) Nonpolar
d) Ionic
Practice: Between which two elements is the difference in electronegativity the greatest?
Practice: Which of the following correctly identifies the chemical bond between two bromine atoms?
