$1.$ Identify a modern technology that functions based on quantum mechanical principles. Explain

how this technology works as if you were describing it to a friend or family member who has not

taken this course.

$2.$ What is meant when we refer to elements in the periodic table as belonging to the s$-$block or

the p$-$block. Give an example of each.

$3.$ What does the acronym VSEPR stand for. How does this theory explain the shapes of molecules?

$4.$ Why is it important to determine the correct shape of a molecule using VSEPR theory when we

are trying to decide if it is polar or non$-$polar?

$5.$ Give an example of one of each of the following: an ionic crystal, a molecular crystal, and a

covalent crystal.