Consider the following boiling point data for these halogen molecules.
|
Substance
|
Electrons
|
Boiling point (oC)
|
|
F2
|
18
|
-188
|
|
Cl2
|
34
|
-34
|
|
Br2
|
70
|
59
|
|
I2
|
106
|
184
|
1. Explain the trend in the boiling points of the halogens by describing the intermolecular forces present.
2. Plot a graph of boiling point against the number of electrons. What force is directly related to number of electrons?
3. Use your graph to predict the boiling point of astatine, the remaining member of the halogen family.