3. Which of the following elements would you expect to have properties most simitar to those of chlorine (Cl) 2 a. Cu b. ! c. Na d. Cr e. S

## Step 1<br />The problem is asking us to identify which of the given elements has properties most similar to those of chlorine (Cl). To solve this, we need to understand the periodic table and the concept of periodic trends.<br /><br />## Step 2<br />Elements in the same group (vertical column) of the periodic table have similar chemical properties because they have the same number of valence electrons. Chlorine (Cl) is in Group 17, also known as the halogens.<br /><br />## Step 3<br />Looking at the options, we need to find the element that is also in Group 17. The options are Cu (Copper), Na (Sodium), Cr (Chromium), and S (Sulfur).<br /><br />## Step 4<br />Among these options, only S (Sulfur) is in Group 16, which is the closest to Group 17. Therefore, Sulfur (S) would have properties most similar to those of chlorine (Cl).