Final answer:
The most recently formed portion of any crystal is usually found on the outer edges of the crystal due to the addition of atoms or molecules during the growth process.
Step-by-step explanation:
The most recently formed portion of any crystal is usually found on the outer edges of the crystal. When a crystal forms, the atoms or molecules arrange themselves in a repeating pattern to form a regular, geometric structure.
The outer edges of the crystal are the areas where new atoms or molecules are added during the crystal growth process, resulting in the most recently formed portion.
For example, consider the growth of an ice crystal. When water freezes, it forms ice crystals with an ordered arrangement of water molecules.
The new water molecules join the existing crystal structure at the outer edges, contributing to the growth of the crystal