Qu’est-ce qu’un ion – Un ion definition
Qu’est-ce qu’un ion – definition
Un ion est simplement un atome avec une charge. Pour expliquer ce qu’est un ion, nous allons brievement passer en revue la structure de l’atome. La configuration electronique nous enseigne qu’un atome est plus stable lorsque son orbitale la plus externe possede un ensemble complet d’electrons. En fait, la tendance d’un atome a atteindre une orbitale externe plus complete est tres puissante et surmontera la force electrostatique qui maintient l’atome ensemble.
Comme dans le cas de l’atome de fluor, il acceptera un electron supplementaire pour atteindre une orbitale plus externe, bien qu’il finisse par avoir un electron de plus que les protons. Fondamentalement, un atome neutre a le meme nombre de protons et d’electrons.
De plus, un element tel que le sodium laissera un electron pour atteindre une orbitale externe complete. Il en resulte une difference et un desequilibre entre les electrons et les protons dans le meme atome.
Dans un atome, les protons (+ ve) sont plus que les electrons (-ve) = le resultat est un ion positif (cation).
Certains atomes laissent plus d’un electron pour avoir une orbitale plus externe. Tandis que d’autres atomes vont acquerir plus d’un electron pour remplir l’orbitale externe. Comme les electrons ont une charge negative (ions negatifs) et que les protons ont une charge positive (ions positifs), une difference entre le nombre d’electrons et de protons donne une charge nette. C’est a ce moment qu’un atome s’appelle un ion.
Selon qu’un electron gagne ou perd, un ion aura une charge positive ou negative. Le cation est un ion ayant une charge positive nette et l’anion est un ion ayant une charge negative nette. Nous savons que les accusations opposees sont attirees, alors que les memes accusations sont rejetees. Cela signifie que les cations et les anions s’attirent. La force de l’attraction peut amener les ions a former un solide appele reseau cristallin.
- Published in Non classifié(e)
Que es un ion
Un ion es simplemente un atomo con una carga. Para explicar que es un ion, revisaremos brevemente la estructura del atomo. La configuracion electronica nos ensena que un atomo es mas estable cuando su orbital mas externo tiene un conjunto completo de electrones. En realidad, la tendencia de un atomo a lograr un orbitario externo mas completo es muy poderosa y superara la fuerza electrostatica que mantiene unido al atomo.
Al igual que en el caso del atomo de fluor, aceptara un electron adicional para lograr un orbital mas externo, a pesar de que terminara teniendo uno mas electrones que protones. Basicamente, un atomo neutro tiene el mismo numero de protones y electrones.
Ademas, un elemento como el sodio abandonara un electron para alcanzar un orbital externo completo. Esto resulta en una diferencia y desequilibrio entre electrones y protones en el mismo atomo.
Cuando en un atomo, los protones (+ve) son mas que los electrones (-ve) = el resultado es un ion positivo (cation).
Algunos atomos abandonan mas de un electron para tener un orbital mas externo. Mientras que otros atomos adquiriran mas de un electron para llenar el orbital externo. Dado que los electrones tienen una carga negativa (ion negativo) y los protones tienen una carga positiva (ion positivo), una diferencia en el numero de electrones y protones da como resultado una carga neta. Esto es cuando un átomo se llama por lo tanto un ion.
Dependiendo de si gana o pierde un electron, un ion tendra una carga positiva o negativa. El catión es un ion que tiene una carga positiva neta y el anión es un ion que tiene una carga negativa neta. Sabemos que los cargos opuestos se atraen, mientras que los mismos cargos son rechazados. Eso significa que los cationes y los aniones se atraen entre si. La fuerza de la atraccion puede hacer que los iones formen un solido llamado retÃculo de cristal.
- Published in Water Chemistry
What is an ion
An Ion is simply an atom with a charge. In order to explain what is an ion, we will briefly review the atom structure. Electron configuration teaches us that an atom is more stable when its outermost orbital has a whole set of electrons. Actually, the tendency of an atom to achieve a complete outer most orbital is very powerful that it will overcome the electrostatic force that hold the atom together.
Like the case of the Fluorine atom, it will accept an extra electron to achieve a full outmost orbital even
though it will end up having  one more electrons than protons. Basically, a neutral atom has the same number of protons and electrons.
Furthermore, an element like Sodium will give up an electron to attain a full outer orbital. This results in a difference and unbalance between electrons and protons in the same atom.
When in an atom protons (+ve) are more than electrons (-ve) = result is positive ion (cation).
Sodium atom loses one electron become Sodium positive ion cation
Some atoms give up more than one electron to have a total outermost orbital. While other atoms will acquire more than one electron in order to fill the outer orbital. Since electrons have a negative charge (negative ion) and protons have a positive charge (positive ion), a difference in the number of electrons and protons results a net charge. This is when an atom is therefore called an ion.
Depending upon whether it gains or loses an electron, an ion will have either a positive or a negative
charge. Cations are ions with a net positive charged and anions are ions with a net negative charge. We know that opposite charges are attracted while same charges are repelled. That means that cations and anions are attracted to one another. The strength of the attraction may make ions form a solid called a crystal lattice.
- Published in Water Chemistry, Water Treatment
What is an Atom Definition
An atom is the most discrete indivisible particle that forms an element. Atoms of the same element are identical; different elements have non-similar atoms. The most simple of all elements is Hydrogen.Â
Example: Hydrogen atoms are similar while Oxygen atoms are different than Hydrogen atoms. Two hydrogen atoms and one Oxygen combined form the water molecule H2O.
The atoms are extremely small. Therefore, even the most powerful microscopes cannot see them. Actually, 6.022X10^23 hydrogen atoms (Avogadro Number) weigh only one gram. There are 454 grams in one pound.
In order to understand the nature of the atom, we should identify the forces that are holding it together. Much as our plant, gravity is the force holding the moon in its orbit around the earth. Gravity is the force of attraction between two large masses.
In the case of the atom, the small size of the particles and the speed at which the electron travels would prohibit a force such as gravity from being able to hold the atom together. Scientists have learned that electrostatic force is the force that maintains the atom.
Atoms Composition
While atoms are composed of small subatomic particles; these particles are the electron, the proton and the neutron. The proton and neutron are found in the nucleus which is the center of the atom. The electron is negatively charged and orbits around the nucleus.
atom composed of subatomic particles electron proton neutron
Atoms from different elements are constituted of the same type of subatomic particles. However, the proportions of the subatomic particles are different for each element. Hydrogen for example has two subatomic particles; an electron and a proton. In the case of hydrogen, a single electron orbits a single proton. ÙAn example is the moon which orbits the earth. Same as in the case of earth, the proton of the hydrogen atom is much larger than the electron.
an electron orbits proton in nucleus in an atom like moon orbits earth
Moreover, if we add a subatomic particle to a Hydrogen atom, we create another atom of another element. Note: The number of subatomic particles is what characterizes atoms of different elements. In addition, if we want to create a Helium atom, we should only add an additional electron, an additional proton and two neutrons to the Hydrogen atom. As a result, we’ll have two electrons orbiting four other particles, two protons and two neutrons in the nucleus.
- Published in Water Chemistry, Water Treatment
