The origin of the properties of chemical elements, alkali metals, electrons, halogens, noble gases, quantum mechanics

There are several groups of elements that have the same properties: alkali metals easily lose an electron (very electropositive), halogen tends to accept electrons (very electronegative), and noble gases are inert.

Although the periodic character of the elements learned in junior high school or above, but how the properties of these elements can be derived from natural laws can not be explained by the high school level of knowledge on these. There are explanations that noble gases are inert because it has a stable electron configuration.

Why is the electron configuration of noble gas stable? In 1962 it was found that noble gases can react and form compounds, although this fact is not usually given to high school. How can an inert noble gas that can react? Is there a specific condition for kereaktifannya? The origin of the nature and character of the chemical elements including appropriate reactivity thank the mysterious nature of the noble gases can be understood in quantum mechanics.

Chemical is a chemical element that can not be subdivided into smaller substances, or could not be converted into other chemical substances by using ordinary chemical methods. Element is the smallest particle of an atom. An atom consists of atomic nuclei (the nucleus) surrounded by electrons. The nucleus consists of a number of protons and neutrons. Until now there are 116 elements known in the world.

Alkali metals are a group of chemical elements on the periodic table Group 1, except hydrogen. This group consists of: lithium (Li), sodium (Na), potassium (K), rubidium (Rb), sesium (Cs) and francium (Fr). All elements of this group is very reactive, so naturally was never found in the singular. To inhibit the reactivity, the alkali metal elements must be stored in the oil medium.

Electrons are negatively charged subatomic particles and are generally written sebaga e-. Electrons do not have any basic component or substructure is known, that he believed to be elementary particles. Electrons have a mass of about 1 / 1836 mass of proton.

Halogen is a group of chemical elements that are in class 17. This group consists of: fluorine (F), chlorine (Cl), bromine (Br), iodine (I), astatin (At), and elements Ununseptium (UUS), which has not been found. Signifies halogen elements which produce salt when reacted with metal. This term comes from the French scientific term from the 18th century, adapted from the Greek.

Noble gases are the elements of group VIIIA. Called noble because these elements are very stable (very difficult to react). Not find a single natural compound from a noble gas. There are also said Noble gases are gases that have lengai nature, not reactive, and hard to react with other chemicals. Noble gases are widely used in the industrial sector. All elements are noble gases in the air, except that radon is a radioactive element. Noble gas elements are most numerous in the air.

Quantum mechanics is a fundamental branch of physics that replaces classical mechanics at the atomic and subatomic level. These studies provide a framework for the various branches of mathematical physics and chemistry, including atomic physics, molecular physics, computational chemistry, quantum chemistry, particle physics and nuclear physics.

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