What Is The Difference Between Atomic Structure And Crystal Structure

When we spoke of the system of periods, we said that its regularity, symmetry, and predictive capacity are indications.

That the model that explains the structure of the atoms of the different elements also has these characteristics.

And in doing so, we took it for granted that atoms and crystals have structure, something that may not seem obvious.

It is worth stopping at this point.

Let us find out the differences between atomic structure and crystal structure:

About the atomic structure:

Chemistry in the nineteenth century had been more than remarkably successful in explaining the combining ratios of various elements and in predicting chemical reactions.

So much so that a good part of the industrial revolution was the chemical-industrial revolution.

This success ended up convincing most scientists in the last quarter of the century.

That a hypothesis as fruitful as the atomic one clearly indicated that matter is actually composed of atoms.

But this conviction immediately raised a related question: Are atoms really indivisible, as had been supposed, or do they consist of even smaller particles?

The periodicity in the properties of the elements led to speculation with the idea that atoms could have a structure.

They could be made up of smaller pieces. Properties change gradually from group to group.

This fact suggests that some units of atomic structure can be added from one element to the next.

Until a certain portion of the structure is completed. This portion would be found completed in the atom of a noble gas.

In an atom of the next heavier element, a new part of the structure will start, and so on.

About crystal structure

The crystalline structure is one of the solid states that atoms, ions, or molecules can adopt in nature.

That is characterized by having a high spatial ordering.

In other words, this is evidence of the “corpuscular architecture” that defines many bodies with glassy and shiny appearances.

The particles are not alone but interact with each other. These interactions consume energy and affect the stability of the solids.

So, the particles seek to accommodate themselves to minimize this energy loss.

So, their intrinsic natures lead them to place themselves in the most stable spatial arrangement.

For example, this can be the one where the repulsions between ions with the same charges are minimal.

Or where some atoms, such as metallic ones, also occupy the largest possible volume in their packings.

The word “crystal” has a chemical meaning that can be misrepresented to other bodies.

Chemically, it refers to an ordered structure (microscopically). That, for example, can consist of DNA molecules (a DNA crystal).

What is the difference between atomic structure and crystal structure Chegg?

Atomic Structure:

Atomic structure is the arrangement of subatomic particles in an atom.

Atomic structure is a complex structure.

Atoms are composed of subatomic particles: electrons, protons, and neutrons.

The overall atomic structure is the same in all atoms.

Crystal Structure:

Crystal structure is the arrangement of atoms or molecules in a crystal.

Crystal structure is a well-organized lattice structure.

Crystals are composed of cations and anions or metal ions and free electrons.

The crystal structures are different from each other depending on the components present in the crystal.

What is the crystal structure of a material?

The word “crystal” has a chemical meaning that can be misrepresented to other bodies.

Chemically, it refers to an ordered structure (microscopically) that, for example, can consist of DNA molecules (a DNA crystal).

How do you determine the structure of a crystal?

Crystal structures can be classified based on their crystal systems or the chemical nature of their particles.

For example, the cubic system is the most common of all, and many crystalline solids are governed by it.

However, this same system applies to both ionic and metallic crystals.

According to its chemical nature:

If the crystals are made up of ions, then they are ionic crystals present in the salts (NaCl, CaSO4, CuCl2, KBr, etc.)

Molecules like glucose form (whenever they can) molecular crystals; in this case, the famous sugar crystals.

Atoms whose bonds are essentially covalent form covalent crystals. Such are the cases of diamond or silicon carbide.

Likewise, metals such as gold form compact cubic structures, which constitute metallic crystals.

What is meant by atomic structure?

Atomic structure refers to the structure of an atom comprising a nucleus (center) in which the protons (positively charged) and neutrons (neutral) are present.

The negatively charged particles called electrons revolve around the center of the nucleus.

Quantum dots made of semiconductor crystals are tiny “islands” consisting of only a few tens of thousands of atoms.

They are a hundred times smaller than the current components of microelectronics.

With their dimensions of just a few nanometers (millionths of a millimeter), these ultra-small systems have fundamentally new physical properties.

Even at room temperature, quantum dots act as cages for electrons. The charge carriers can no longer move freely in it.

Their energy is completely “quantized”. Quantum effects determine what happens in such nanocrystals made of semiconductor material.

A precondition for the technical use of quantum dots is the exact knowledge of the atomic structure of the semiconductor nanocrystals.

Targeted structuring with tools or masks, as is known from the production of microchips.

For example:

Is practically not possible on this tiny scale.

The etching processes that have so far been mainly used for this cause too many defects in the structures and thus make them unusable.

Rather, the natural forces of order are used in the growth of semiconductors.

Without outside influence, such quantum dots arise in a self-organized manner.

So, they form almost by themselves. For technological applications such as in lasers.

It is important that the quantum dots generated in this way have a regular, uniform shape and a predominant orientation.

What are the 7 different types of crystal structure?

Triclinic

Monoclinic

Orthorhombic

Tetragonal

Trigonal

Hexagonal and

Cubic

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