Question

what do the pink - colored blocks indicate? noble gases representative groups alkali metals halogens

Explanation:

Noble gases are in the far - right column. Alkali metals are in the first column. Halogens are in the second - last column. The pink - colored blocks represent representative groups which include elements from different groups like alkali metals, alkaline earth metals, and others in the main body of the periodic table.

Answer:

representative groups