Essay on Atoms

Chemistry beginners must have theoretical knowledge which forms the basis of our understanding of chemistry. He acquires this knowledge before having the necessary mathematical background for the rigorous course of quantum mechanics It must be. This method aims to fulfill this need by emphasizing the physical or observable aspect of the theory by widely using the electronic charge density.

The way in which the negative charges of atoms or molecules are aligned in three dimensions is determined by the electron charge density distribution. Therefore, it directly determines the size and shape of the molecules, their electronic torque, in fact all of their chemical properties and physics.

Even the shallow minimum values ​​of the potential curves caused by chemical bonds, ions or covalent bonds, van der Waals forces are the same.

In this process classifications of bonds, ions or covalent bonds are preserved, but physical definitions are given based on the actual charge distribution within the molecule. In covalent bonding, the valence charge density is distributed throughout the molecule and the attractive forces involved in the binding of the nuclei are added by the charge density that they equally share in the intranuclear region. In ionic bonding, the valence charge density is in the region of a single core, and in this extreme combination the charge density on a single core exerts an attractive force coupling the two nuclei.

In the Web page, we first explain the need to explain atomic events on the new mechanism. This is explained by a discussion of experiments with electrons and lights found to be unexplainable in the mechanics of Newton. By comparing quantum and classical results of similar one dimensional systems, the basic concepts of quantum description of bound electrons such as quantization, degeneracy and its probability are introduced. We examined atomic orbital descriptions of multiple electron atoms and Pauli exclusion principle in detail and examined the predicted experimental results in detail.

An atom is defined by the number of protons and neutrons. The number of protons represents the number of atoms and determines which element is an atom. Neutron contributes to atomic stability and determines the number of isotopes. The most important stabilizing element found by humans is lead, and there is sufficient evidence that there are 82 protons. Due to the structural symmetry of the atoms, some isotopes of lead with different numbers of neutrons are stable for their "mysterious" number of protons. Normally, atoms with many protons and neutrons become asymmetric in atomic structure, become unstable and collapse into lighter elements. However, chemists have speculated that some of these very heavy elements may have stable isotopes

In order to understand what the radioisotope is, you must have a basic understanding of the atom. An atom is composed of three elementary particles: proton, neutron, and electron. A proton and a neutron combine to form a nucleus, and electrons are orbiting along orbits ... Further display ... In nuclear medicine diagnosis, a very small amount of radioactive substance is introduced into the body. Because medical isotopes are drawn to specific organs, bones, or tissues, the emissions they produce may provide important information on a particular type of cancer or disease. Information gathered during nuclear medicine technology is more comprehensive than other diagnostic imaging procedures to explain organ function as well as structure. As a result, we can diagnose many diseases and cancer early.

Radiometric dating is based on the rate at which certain known radioisotopes disintegrate into their radioactive daughter isotope. Due to the types of atoms present in minerals or other materials and their approximate age, certain isotopes are suitable for different applications. For example, isotope-based technologies with a half-life of several thousand years such as carbon 14 are too small for detectable amounts of radioactive atoms and their decaying secondary isotopes to enter the instrument, so that billions of years Can not be used for materials of age. Measure within uncertainty