Question

1. what three metals are in the third period (row) of the periodic table?

Explanation:

The third period of the periodic table has elements with atomic numbers 11 - 18. The metals in this period are determined by their properties (metallic character, ability to lose electrons). Sodium (Na, atomic number 11), Magnesium (Mg, atomic number 12), and Aluminum (Al, atomic number 13) are metals here. Sodium and Magnesium are alkali and alkaline earth metals respectively, and Aluminum is a post - transition metal.

Answer:

Sodium (Na), Magnesium (Mg), and Aluminum (Al)