Why are metals malleable?A.Metals do not have free electronsB.Metals consist layers of atoms that slides over one anotherC.Metals have closely bound atomsD.All the above

The correct answer is B. Metals consist of layers of atoms that slide over one another.

Here’s an explanation:

Metals are malleable because their atoms are arranged in layers that can slide over one another without breaking the metallic bonds. This ability to deform under stress without fracturing is a key characteristic of metals. When a force is applied to a metal, these layers can shift easily, allowing the metal to be hammered or rolled into thin sheets.

To elaborate on the other options:

A. Metals do not have free electrons: This is incorrect. In fact, metals have free electrons, which are essential for their conductivity and also contribute to their malleability. These free electrons create a "sea of electrons" that helps hold the metal atoms together while allowing them to move past each other.

C. Metals have closely bound atoms: While it’s true that the atoms in metals are closely packed, it’s the specific arrangement of these atoms into layers that allows them to slide past one another, making them malleable.

D. All the above: This option is incorrect because options A and C do not accurately describe why metals are malleable.

Therefore, the ability of metal layers to slide over one another is what primarily contributes to their malleability.