![]() The prefix mono- is generally omitted for the first element. ![]() While molecular compounds are formed by covalent bonds, in which the electrons are shared by the atoms forming the bond. They have interaction of cations and anions in them. Prefixes are used to indicate the number of atoms of a given element in a molecule ( mono- = 1, di- = 2, tri- = 3, tetra - = 4 …). Ionic compounds are formed by the ionic bonds in which the atoms are electrostatically attracted to one another. Name of a binary molecular compound: name of the 1 st element of the formula + name of the 2 nd element with the suffix – ide. The word ion is omitted. If the metal is a variable charge metal, the charge is indicated in parentheses with Roman numeralsīinary molecular compounds are composed of 2 nonmetals Whereas ionic compounds are usually formed when a metal and a nonmetal combine, covalent compounds are usually formed by a combination of nonmetals. ![]() A covalent bond is a type of bond that occurs between two nonmetals. Under normal conditions, molecular compounds often exist as gases, low-boiling liquids, and low-melting solids, although many important exceptions exist. Molecular compounds are compounds made up of nonmetals. ionic bond: electrostatic forces of attraction between the oppositely charged ions of an ionic compound. An Ionic bond is a type of bond that forms between a metal and a non-metal. Name of an ionic compound: name of the cation + name of the anion with the suffix – ide for non-polyatomic ions. 12 explain why ionic and covalent network substances are solid (high melting points), and why covalent molecular substances can be solid, liquid or gas (low. Ionic compounds are composed of positive and negative ions held together by ionic bonds. They consist of 2 ions derived from 2 different elements: one metal element (a cation) and 1 nonmetal element or polyatomic ion (an anion) Most ionic compounds are binary compound. ![]()
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