are ionic or molecular compounds?
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Compounds that contain ions are called ionic compounds. Ionic compounds generally form from metals and nonmetals. Compounds that do not contain ions, but instead consist of atoms bonded tightly together in molecules (uncharged groups of atoms that behave as a single unit), are called covalent compounds.
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bonding. In ionic bond. …results in compounds known as ionic, or electrovalent, compounds, which are best exemplified by the compounds formed between nonmetals and the alkali and alkaline-earth metals.
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ionic compound. -one or more electrons are transferred from metals to nonmetals, which form positive or negative ions. -A compound of positive and negative ions held together by ionic bonds. ionic bonds. -attraction between the atoms of ionic compounds.
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When ionic compound melts , long range network of ionic bonds changes into short network of ionic bonds. When ionic compound boils , then ionic bonds are decreased to almost zero. In molecular solids, basic units are molecules.
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However, the forces of attraction between molecules are much smaller and molecular compounds are gases, liquids or solids with low melting points. Thus, NH4Cl and (NH4)2SO4 (both solids) are ionic compounds.
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An example of an ionic solid is table salt, NaCl. Molecular solids—Made up of atoms or molecules held together by London dispersion forces, dipole-dipole forces, or hydrogen bonds. Characterized by low melting points and flexibility and are poor conductors.
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Ionic compounds are made up of molecules as well. Ionic compounds have all the characteristics of a compound. ... The bond that holds the atoms together in it is ionic bond; electrostatic force of attraction. Ionic compounds have 2 or more ions joined together by means of ionic bond into molecules.
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Molecular compounds are electrically neutral. Ionic compounds are (usually) formed when a metal reacts with a nonmetal (or a polyatomic ion). Covalent compounds are formed when two nonmetals react with each other. Since hydrogen is a nonmetal, binary compounds containing hydrogen are also usually covalent compounds.
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1 Answer. Ionic compounds typically have much higher melting points than molecular compounds. ... To melt a molecular substance, you need to break these weak intermolecular forces between neutral molecules, which is why ionic compounds generally have much higher melting points than molecular compounds.
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The compound is ionic in nature, because it contains a metal (aluminum) and a non-metal (oxygen). Ionic compounds occur between metals and non-metals and involve the exchange of electrons between the two atoms. The metal always donates electrons to the non-metal to form the ionic bond.
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Ionic compounds exhibit electrostatic intermolecular forces that form strong bonds with other ionic species. ... Ion-dipole bonds (ionic species to covalent molecules) are formed between ions and polar molecules. These compounds typically form medium to strong bonds.
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An ionic compound is a giant structure of ions. The ions have a regular, repeating arrangement called an ionic lattice . ... This is why solid ionic compounds form crystals with regular shapes.
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Ionic solids—Made up of positive and negative ions and held together by electrostatic attractions. ... Molecular solids—Made up of atoms or molecules held together by London dispersion forces, dipole-dipole forces, or hydrogen bonds. Characterized by low melting points and flexibility and are poor conductors.
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The ions are held together by ionic bonds, which form an ionic compound. Ionic compounds generally form between elements that are metals and elements that are nonmetals. For example, the metal calcium (Ca) and the nonmetal chlorine (Cl) form the ionic compound calcium chloride (CaCl2).
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Atoms and Ions have the same number of neutrons. A molecule is particle consisting of multiple atoms. Pure elements are substances composed of one type of atom where as a compound is made up of different types of atoms. Ionic compounds consist of metals and nonmetals and contain ions with charges.
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In the solid state, ionic compounds are in crystal lattice containing many ions each of the cation and anion. ... If you know the name of a binary ionic compound, you can write its chemical formula. Start by writing the metal ion with its charge, followed by the nonmetal ion with its charge.
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Individual ions within an ionic compound usually have multiple nearest neighbours, so are not considered to be part of molecules, but instead part of a continuous three-dimensional network, usually in a crystalline structure. ... Ionic compounds typically have high melting and boiling points, and are hard and brittle.