Nordic Gold, a gold-coloured alloy, often used in coins, is made of 89% copper, 5% aluminium, 5% zinc, and 1% tin. In the common or industrial classification of metals, the following descriptions of metals are not chemically exact terms:īase metals are neither noble nor precious, are not resistant to oxidation, are common and are readily available with many uses, including Aluminium, Copper, Lead, Nickel, Tin and Zinc.Ĭoinage metals are copper, gold and silver, but this description of metals is not a chemically exact term. Mg 2+.ġ.3.0 Common or industrial classification of metals They easily lose two electrons to form ions, e.g. They are harder and have higher melting points and boiling points than the alkali metals. Group 2 elements are the alkaline earth metals, Be, Mg, Ca, Sr, Ba, Ra. Hydrogen is considered separately, because it has few of the properties of the alkali metals. They all have one valence electron that they lose easily to form ions. They react easily with water, have low melting points and densities, and are good conductors of electricity. The alkali metals are all soft, shiny and metallic when cut. Group 1 elements include the alkali metals, Li, Na, K, Rb, Cs, Fr. Transuranic elements have atomic number > 92Īlkali metals: Lithium, Li, Sodium, Na, Potassium, K, Rubidium, Rb, Caesium, Cs, Francium, Fr Introduction to the periodic table: 1.10.1 See: Periodic table, An official website of the United States governmentĬommon or industrial classification of metals: 1.3.0
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