The densities of group 13 elements are ........... than those of group 2 elements.

Explanation

To determine the relationship between the densities of group 13 elements and group 2 elements, we can follow these steps:

### Step 1: Identify the Groups
- Group 2 elements are known as alkaline earth metals (e.g., Be, Mg, Ca, Sr, Ba, Ra).
- Group 13 elements include metals like Al, Ga, In, and Tl.

**Hint:** Remember the periodic table layout and the characteristics of each group.

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