Atomic arrangements are……….within each grain A. Same B. Different C. Haphazard D. Nonuniform

The correct answer is A. Same.

Explanation:

Grains in materials refer to the individual crystal structures within a solid material, particularly in metals and alloys. Each grain in a polycrystalline material has a uniform arrangement of atoms that follow a specific crystalline lattice structure. This uniformity is a key aspect of crystalline materials, as the atomic arrangement is consistent within each grain, allowing for predictable properties and behavior when subjected to various stresses.

While the arrangement of grains can vary between different grains due to factors like differences in orientation and crystallography, the atomic structure within any given grain remains the same. This consistency contributes to the strength and other mechanical properties of the material, as each grain contributes to the overall properties of the bulk material.

In summary, while the atomic arrangements can differ from one grain to another, each individual grain maintains a consistent atomic arrangement, making the best answer A. Same.