What Are Ionic Compounds?

A compound consisting of cations and anions. When active metals (such as sodium, potassium, calcium, magnesium, etc.) and active non-metals (such as fluorine, chlorine, oxygen, sulfur, etc.) are combined with each other, the active metal loses electrons to form positively charged cations (such as Na ⁺ , K ⁺ , (Ca ²⁺ , Mg ^2+, etc.), active non-metals get electrons to form negatively charged anions (such as F-, Cl-, O2-, S2-, etc.), and cations and anions form ionic compounds by electrostatic action. For example, sodium chloride is an ionic compound composed of positively charged sodium ions (Na ⁺ ) and negatively charged chloride ions (Cl-). In an ionic compound, the total number of positive charges carried by the cation is equal to the total number of negative charges carried by the anion, and the entire compound is electrically neutral.

Ionic compounds

Ionic compounds are found in:

1. Compounds formed between active metals (referring to metal elements of the first and second main groups) and active non-metal elements (referring to elements of the sixth and seventh main groups)

2,

Both ionic and covalent compounds involve the movement of electrons.

An ionic compound is a compound formed by an ionic bond, which is formed by electron transfer (the person who loses an electron is a cation and the person who acquires an electron is an anion). That is, the positive and negative ions are formed by the electrostatic effect.

(1) Judging by the properties of the constituent elements of the compound

(2) Judging by whether the ionic bond constituting the compound is an ionic bond or a covalent bond

(3) Judging by the type of compound

(4) Judging by the conductivity of the compound

(5) Judging by the melting point of the compound

Ionic compounds

Both ionic and covalent compounds involve the movement of electrons.
An ionic compound is a compound formed by an ionic bond, which is formed by electron transfer (the person who loses an electron is a cation and the person who acquires an electron is an anion). That is, the chemical bond formed between positive and negative ions due to electrostatic interaction.
Covalent compounds are formed by covalent bonds that share electrons.

(1) Judging by the properties of the constituent elements of the compound (2) Judging by whether the ionic bonds constituting the compound are ionic or covalent bonding (3) Judging by the type of the compound (4) Judging by the conductivity of the compound Judgment (5) Judging a compound consisting of a cation and an anion based on the melting point of the compound. When active metals (such as potassium, calcium, sodium, magnesium, etc.) and active non-metals (such as fluorine, chlorine, oxygen, sulfur, etc.) combine with each other, the active metal loses electrons to form positively charged cations (such as Na +, K +, Ca2 +, Mg2 +, etc.), active non-metals get electrons to form negatively charged

Specifically, strong bases, salts (including ammonium salts), and most metal oxides are ionic compounds, but not only these. For details, see the existing forms of ionic compounds.

Ionic polymers, also known as ionomers, refer to polymers that contain a small amount of ionic groups in the hydrocarbon molecular chain. It is generally believed that the molar content of ionic groups does not exceed 15%. Its main part is a non-ionic main chain, and its secondary part is an ionizable or ionic comonomer. ^[1]

An ionic compound is a compound consisting of a cation and an anion. When active metals (such as sodium, potassium, calcium, magnesium, etc.) and active non-metals (such as fluorine, chlorine, oxygen, sulfur, etc.) combine with each other, the active metal loses electrons to form positively charged cations (such as Na +, K +, Ca2 +, Mg2 +, etc.), active non-metals get electrons to form negatively charged anions (such as F-, Cl-, O2-, S2-, etc.), and cations and anions form ionic compounds by electrostatic action. For example, sodium chloride is an ionic compound composed of positively charged sodium ions (Na +) and negatively charged chloride ions (Cl-). Many bases (such as NaOH, KOH, Ba (OH) 2, etc.) and salts (such as CaCl2, KNO3, CuSO4, etc.) are ionic compounds. In an ionic compound, the total number of positive charges carried by the cation is equal to the total number of negative charges carried by the anion, and the entire compound is electrically neutral. Most ionic compounds cannot conduct electricity in the solid (or crystalline) state, while their aqueous or molten states can conduct electricity. Generally speaking, ionic compounds have higher melting points and boiling points, greater hardness, brittle quality, and are difficult to compress and volatile. Some basic oxides, such as Na2O, K2O, common salts such as NaCl, KF, and common bases, such as NaOH, are ionic compounds. Ionic compounds are compounds formed between 1. active metals (referring to metal elements of the first and second main groups) and active non-metal elements (referring to elements of the sixth and seventh main groups). 2. Compounds formed between metal elements and acid ions. (Acid ions such as sulfuric acid and ions, nitric acid and ions, carbonate and ions, etc.) 3. Ammonium and ions (

) And acid ions, or ammonium and ions and non-metal elements covalent compounds exist between non-metal elements, for compounds formed by two elements. If it exists between the same non-metal elements, then it is a non-polar covalent bond. If a polar covalent bond is formed between different elements, they are all covalent compounds. Ionic compounds are electrolytes and can conduct electricity in both aqueous and molten states. Role in galvanic cells: forming a closed circuit! Like hydrogen chloride, compounds that form molecules with shared electron pairs are called covalent compounds. Such as water H2O, carbon dioxide CO2, ammonia NH3, etc. are common covalent compounds. A covalent compound is a compound molecule composed of a pair of electrons shared by atoms. When two nonmetal element atoms (or inactive metal elements and nonmetal elements) are combined, one or more electrons are formed between the atoms to form an electron pair. This electron pair is attracted by the two nuclei and is shared by the two atoms. To make two atoms form a compound molecule. For example, hydrogen chloride is a compound molecule composed of a hydrogen atom and a chlorine atom, each with an outermost electron forming a common electron pair. Non-metal hydride (such as HCl, H2O, NH3, etc.), non-metal oxide (such as CO2, SO3, etc.), anhydrous acid (such as H2SO4, HNO3, etc.), most organic compounds (such as methane, alcohol, sucrose, etc.) Are all covalent compounds. Most covalent compounds have a lower melting point and boiling point, and lower hardness in the solid state ^[2] .