Non-Malleable and Ductile: Non-metals are very brittle, and cannot be rolled into wires or pounded into sheets. Some nonmetals are very reactive, whereas others are not reactive at all. Copper is used in making electric wires, gold is used to make jewellery, stainless steel is used to make pots, pans, etc Materials are distinguished as above, … The atoms of non-metals tend to be smaller than those of metals. Only diamond, a form of carbon is hard. . In fact, diamond is the hardest substance. Physical Properties of nonmetals: Physical State: Most of the non-metals exist in two of the three states of matter at room temperature: gases (oxygen) and solids (carbon). Like to react with metals, Gain valence electrons to form ions when bonding. Non metals have properties opposite those of the metals . For e.g. Following are the important chemical reactions of non-metals. A nonmetal is an element that is generally a poor conductor of heat and electricity. It depends on the number of electrons in their outer energy level. Only bromine exists as a liquid at room temperature. Metals and Nonmetals are different types of materials present around us. The following are the general properties of non-metals. ; Non-Malleable and Ductile: Non-metals are very brittle, and cannot be rolled into wires or pounded into sheets. Graphite, diamond and iodine crystals are exceptions, as these shine. Nonmetals are also poor conductors of heat, and solid nonmetals are dull and brittle. The following are the physical properties of metal : The physical properties make them useful for many purposes. The metalloids, or semimetals, have properties that are somewhat of a cross between metals and nonmetals. 3. Several of the other properties of non-metals result from their atomic sizes. Poor Conductors of heat and electricity, dull, Brittle solids, Most are gases at room temperature, Low density, Low melting point, Not malleable, Not ductile. 1. Physical Properties of nonmetals. In the chemical world, these “spare parts” would be considered non-metals, loosely defined as not having the properties of metals. Non-metals are also called electronegative elements because the non-metal atom form negatively charged ion by accepting electrons. Most of the non-metals are non-lustrous and dull such as sulphur, phosphorus. Physical Properties of Nonmetals. The metalloids, or semimetals, have properties that are somewhat of a cross between metals and nonmetals. ; Conduction: They are poor conductors of heat and electricity. Elements can be divided into metals and nonmetals and it is important to know whether a particular element is a metal or nonmetal.Metals (like copper and aluminium) are good conductors of heat and electricity, while nonmetals (such as phosphorus and sulfur) are insulators. Chemical Properties of nonmetals. Among the non-metals, the anionic dopants have a strong influence on the VB. 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