Question

Based on their location in the periodic table, give the symbols for three elements that would be expected to form positive ions in their reactions.

Short answer

The symbols for three elements that would be expected to form positive ions in their reactions are Sodium (Na), Magnesium (Mg), and Iron (Fe). These metals are found on the left side and in the middle of the periodic table and tend to lose electrons during chemical reactions, forming positive ions.

Step-by-step solution

Identifying Metals in the Periodic Table

: To begin with, we will look for metals in the periodic table. Metals are usually found on the left side and in the middle of the periodic table. They tend to lose electrons and form positive ions during chemical reactions.

Selecting Three Metals

: Now that we know where to find metals in the periodic table, let's choose three of them. For this example, we will select Sodium (Na), Magnesium (Mg), and Iron (Fe).

Giving the Symbols

: So, the three elements which are expected to form positive ions in their reactions are: 1. Sodium (Na) 2. Magnesium (Mg) 3. Iron (Fe) These elements lose electrons to achieve stable electron configurations and in doing so, they become positively charged ions, which participate in chemical reactions.