What are the groups of atoms inside iron called?

Please clarify the question. I didn't know iron had atoms inside. Electrons, protons, neutrons yes but not atoms.

That is the question that I was given for homework and it stumped me also. Is it possible that the answer is transition metals. I looked on the periodic chart and found that that is what was possibly inside it. I am confused. Wondering if you could clarify the answer??

Magnetic domains

The groups of atoms inside iron are called metallic lattices or crystal lattices. These lattices are formed by iron atoms arranging themselves in a highly regular and repeating pattern. The phenomenon is known as crystal structure.

To understand this concept, one needs to delve into the field of solid-state physics. The crystal lattices in metals like iron are characterized by closely packed atoms that are bonded together by metallic bonds. Each iron atom shares its electrons with neighboring iron atoms, resulting in a sea of delocalized electrons that move freely throughout the lattice.

The crystal lattice structure determines many of the properties of iron, including its strength, ductility, and conductivity. Different metals have different crystal structures, which can be determined using techniques such as X-ray crystallography or electron diffraction.

So, in summary, the groups of atoms inside iron are called metallic lattices or crystal lattices, which are formed due to the arrangement of iron atoms in a highly ordered and repeating pattern.