Identify elements A, B, H, C, D, E, G based on their groups and periods, and compare the trends.

Here are the answers to the questions based on the provided periodic table diagram:

First, let's identify the elements based on their positions:

• A: Group 1, Period 2 (Lithium, Li)
• B: Group 2, Period 2 (Beryllium, Be)
• H: Group 1, Period 3 (Sodium, Na)
• C: Group 15, Period 2 (Nitrogen, N)
• D: Group 16, Period 2 (Oxygen, O)
• E: Group 17, Period 2 (Fluorine, F)
• G: Group 18, Period 1 (Helium, He)

**1. Compare the trend