-
Anonymous users2024-02-05The melting point of MGO is higher than that of NAF because the former has more ionic bonds than the latter.
Ionic compounds have higher melting and boiling points, and the ionic crystal melting process of ionic compounds needs to break the ionic bonds, so the melting point of ionic compounds is related to the number of ionic bonds, so the more ionic bonds, the higher the melting point.
At the same time, if the structure is similar and in the ionic crystal with the same number of ions in the chemical formula, the ionic radius is small, and the charge of the ions in the chemical formula is large, the bond energy will be stronger, and the boiling point and melting point will be higher.
-
Anonymous users2024-02-04The melting process of ionic crystals requires the destruction of ionic bonds, so the melting point is determined by the strength of ionic bonds. In an ionic crystal with a similar structure and the same number of ions in the chemical formula, the smaller the ionic radius (or the smaller the sum of the anion and cation radius), the greater the charge of the ion, and the higher the melting and boiling point of the stronger the bond energy.
-
Anonymous users2024-02-03Magnesium ions and oxygen ions each have a formal charge of two units, and sodium ions and fluoride ions each have a formal charge of one unit. Therefore, the ionic bond in MGO is strong (strictly speaking, it should be the lattice energy of MGO).
-
Anonymous users2024-02-02They are both ionic crystals, and the melting and boiling point of ionic crystals is related to the number of charges carried by the ions and the bond length of the ionic bond, the bond length is related to the atomic radius, the smaller the atomic radius, the greater the bond length. As you can see from the periodic table, Mg and O have larger atomic radii than both Na and F, so the melting point of Mgo is higher than that of Naf.
-
Anonymous users2024-02-01Ionic compounds have high melting and boiling points, which is related to the large lattice energy of their ionic crystals. The melting point of MGO (2800) is much higher than that of NAF (988) due to Umgo UNAF.
-
Anonymous users2024-01-31Because the number of MGO charges is large, the ionic bond is strong, so the melting point is high.
MGO two.
naf one.
-
Anonymous users2024-01-30Force: MGO>BAS; Melting Point: MGO>BAS
Because they are ionic crystals, the smaller the ionic radius, the greater the inter-ion force, i.e., the greater the lattice energy. The greater the lattice energy, the higher the melting point of the ionic crystal.
Ionic radius: r(mg2+).
-
Anonymous users2024-01-291. Magnesium oxide is composed of divalent ions, while sodium chloride is composed of monovalent ions; 2. The radius of magnesium ions and sodium ions is about the same, but the radius of oxygen ions is smaller than that of sodium ions, so the ions in magnesium oxide can be closer to each other. In summary, magnesium oxide has stronger ionic bonds and is therefore less prone to liquefaction and gasification than sodium chloride.
-
Anonymous users2024-01-28MGO has a high melting point compared to NaCl, the former has a high charge and a large lattice energy.
The factors that determine the lattice energy are, in order:
Ionic charge. Ionic radius.
Electron shell configuration of an ion.
Low melting point can be made into low melting point alloys. >>>More
First of all, understand how light works, as light travels from the sun, it moves up and down like ocean waves, and when the wavelengths come together, we appear as if they are white.
Because women are born stunners, when a woman likes a man, and she doesn't know how to express herself, sometimes she will make mistakes, naïve mistakes, and men, that is, when women use the wrong way to express love or vinegar, they will feel sad, it just so happens that this sadness is also a kind of love, but also because Ai'er eats women's vinegar, at this time, if a couple does not grasp the sign of love, they will feel sad and sad, and they will break up because of this, if they grasp it well, they will be more affectionateAt this time, both of them are still very young, and they will not consider the problem from the perspective of the other party, so it is logical to hurt each other, The specific approach is, I love you, and you don't feel it, I will talk and laugh with other people of the opposite sex, to make you feel jealous, so that you will be nervous about me, you will find a way to get close to me, and you will love me more. In fact, otherwise, often some things will be wrong, and on this issue of love, young men and women, the way of expression will be the same, the more you love, the more jealous you will be, the more angry you will be, the more angry you will be, the more angry you will do things against your heart, and slowly you will distort the meaning of love, the more it will hurt each other's hearts, so in the end, there will only be sadness. In fact, love, I think it is to stand in the other party's position, to consider the other party's feelings, try to use care, tolerance, love, appreciation, to move the other party, and slowly establish long-term trust, you will grow old together and be happy. >>>More
It is indeed difficult for college students to find a job now because many companies now require experience, especially if you are studying software development, the requirements for academic qualifications are not so high, only experience. It's not to blame you, the school basically teaches everything for computer majors but only teaches the surface, the actual programming ability is lacking, and ah, the school textbooks are a few years ago, and they can't keep up with the needs of society at all. In general, you have two options now, one is to find a job in a company that you think you can slowly gain experience in the job for a few years, but the salary is very low; The other is that you can find a training institution to train, and now the formal training institutions are provided by projects, so that you basically have experience when you graduate and can find a good job. >>>More
People are afraid of being famous, and pigs are afraid of being strong" >>>More