Using the Aufbau chart provided, draw the energy level diagram for a potassium atom. Label

each of the subshells and place the correct number of electrons in each orbital.

$8.$ Show the electron configuration for carbon using an orbital box diagram.

$9.$ How many sigma and pi bonds are found in a molecule of ethyne $($C$2$H$2)?$

$10.$ a$)$ What type of hybridization do the bonds in a molecule of methane have? What is the name

for the geometric shape in which the bonds are arranged?

b$)$ Draw each of the following: $($i$)$ the Lewis structure of methane, $($ii$)$ the structural formula of

methane, $($iii$)$ the VSEPR geometry of methane.