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| 1. |
Difference between metal and non metal in both chemical and physical properties |
| Answer» MetalsMajority elements are metals. This includes alkaline earth metals, alkali metals, transition metals, actinides, and lanthanides. Metals are separated by nonmetals on a periodic table through a zigzag line starting from carbon, phosphorus, selenium, iodine, and radon. These elements and elements right to them in the periodic table are nonmetals. Elements present just to the left of the line are termed as semi-metals and metalloids. These will have the combined properties of both metals and nonmetals.Physical properties of metalsShiny (lustrous)Good conductors of electricity and heatHigh densityHigh melting pointMalleableDuctile and so can be drawn into wiresSolid at room temperature except for mercuryOpaque objectsChemical properties of metalsEasily corrodibleCan lose electronsForm basic oxidesHave lower electronegativitiesActs as very good reducing agentsNonmetalsVery few elements in the periodic table are nonmetals. These are present on the right side of the periodic table. Elements that come under nonmetals are hydrogen, carbon, nitrogen, phosphorus, oxygen, sulfur, selenium, all the halogens, and the noble gases.Physical properties of non-metalsPoor conductors of electricity and heatNon-Ductile metalsBrittle solidsMay be solids, liquids or gases at room temperatureThese are not sonorousTransparentChemical properties of non-metalsGenerally, contain 4-8 electrons in the outer shellReadily lose or gain valence electronsForm acidic oxid | |