By Monica Halka

ISBN-10: 0816073694

ISBN-13: 9780816073696

ISBN-10: 1438131844

ISBN-13: 9781438131849

Scientists categorize the chemical parts as metals, nonmetals, and metalloids principally according to the weather' skills to behavior electrical energy at common temperatures and pressures, yet there are different differences taken into consideration while classifying the weather within the periodic desk. The alkali metals, for instance, are metals, yet have such certain houses that they're given their very own class. an identical is right for the alkaline earths.

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Davy then repeated the experiment using soda ash. He found that a stronger electrical current was required, and within a few days of his isolation of potassium, he discovered sodium (named because it came from soda ash). At first, other scientists doubted that Davy’s potassium and sodium were, in fact, true elements. They thought that maybe Davy’s “elements” were compounds of potassium or sodium and hydrogen. Davy was able, however, to demonstrate successfully their elemental nature. One of the greatest chemists of the 19th century was Jöns Jakob Berzelius (1779–1848) of Sweden.

Although metallic sodium reacts vigorously with water, it is nevertheless much less hazardous to work with than the heavier alkalis. In the form of the Na+ ion, sodium is found in a wide variety of food products. Important sodium salts include the chloride, carbonate, bicarbonate, citrate, hypochlorite, chlorate, fluoride, nitrate, phosphate, sulfate, thiosulfate, hydroxide, and azide. Sodium chloride (NaCl, also known as table salt or rock salt) is used to cure fish, pack meat, cure hides, preserve canned foods, flavor foods, and melt ice on city roads.

In a weapon or fusion reactor, nuclear fusion occurs between two isotopes of hydrogen—deuterium and tritium. 015 percent of water molecules). Tritium, on the other hand, is radioactive, has a relatively short half-life, and does not occur naturally. Tritium can be manufactured, however, by bombarding lithium 6 with neutrons. Worldwide lithium production is about 12,500 metric tons per year. With increasing demand for lightweight batteries and power sources that do not depend on fossil fuels, the use of lithium will almost certainly continue to grow.

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Alkali and Alkaline earth metals (Periodic Table of the Elements) by Monica Halka

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