1. Fill in the blanks:

- A polar bond results from the ________ sharing of the electrons in a covalent bond between atoms.
- A nonpolar bond results from the ________ sharing of the electrons in a covalent bond between atoms.

2. Complete the Lewis electron-dot symbols and valence electron configuration for elements in the following table.

[tex]\[
\begin{array}{|c|c|c|}
\hline
\text{Group} & \text{1 A} & \text{2 A} \\
\hline
\begin{array}{r}
\text{Valence} \\
\text{electrons}
\end{array} & \text{ns} & \\
\hline
\text{Period 2} & \text{Li} & \text{Be} \\
\hline
\text{Period 3} & \text{Na} & \text{Mg} \\
\hline
\end{array}
\][/tex]

[tex]\[
\begin{array}{|c|c|c|c|c|c|c|}
\hline
\text{3 A} & \text{4 A} & \text{5 A} & \text{6 A} & \text{7 A} & \text{8 A} \\
\hline
& & & & & \\
\hline
\text{s}^2 \text{np}^5 \\
\hline
\text{B} & \text{C} & \text{N} & \text{O} & \text{F} & \text{Ne} \\
\hline
\text{Al} & \text{Si} & \text{P} & \text{S} & \text{Cl} & \text{Ar} \\
\hline
\end{array}
\][/tex]

3. Learn the definitions of the types of intermolecular forces between molecules and/or ions. Fill in the blanks.

[tex]\[
\begin{array}{|c|l|}
\hline
\text{Particles Interact} & \text{via Intermolecular Forces} \\
\hline
\begin{array}{c}
\text{Polar molecules interact} \\
\text{with polar molecules}
\end{array} & \\
\hline
\text{Ions interact with polar molecules} & \\
\hline
\begin{array}{l}
\text{Polar molecules with O-H, N-H, or H-F} \\
\text{groups interact with each other, or with} \\
\text{polar molecules containing O, N, and F}
\end{array} & \\
\hline
\begin{array}{c}
\text{Nonpolar molecules interact} \\
\text{with nonpolar molecules}
\end{array} & \\
\hline
\begin{array}{c}
\text{Nonpolar molecules interact} \\
\text{with polar molecules}
\end{array} & \\
\hline
\end{array}
\][/tex]