By Monica Halka
Scientists categorize the chemical components as metals, nonmetals, and metalloids mostly in response to the weather' skills to behavior electrical energy at basic temperatures and pressures, yet there are different differences taken under consideration while classifying the weather within the periodic desk. The alkali metals, for instance, are metals, yet have such specific homes that they're given their very own class. a similar is correct for the alkaline earths.
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Extra resources for Alkali and Alkaline-earth Metals
Example text
There are several ways in which transmutation can occur. Some transmutations occur naturally, while others only occur artificially in nuclear reactors or particle accelerators. The most familiar form of transmutation is radioactive decay, a natural process in which a nucleus emits a small particle or photon of light. Three common modes of decay are labeled alpha, beta, and gamma (the first three letters of the Greek alphabet). Alpha decay occurs among elements at the heavy end of the periodic table, basically elements heavier than lead.
Sodium bicarbonate (NaHCO3) is a source of carbon dioxide and is the principal ingredient in baking powder and baking soda. Sodium citrate (Na3C6H5O7) is added to soft drinks to control their acidity. Sodium hypochlorite (NaClO) is the source of chlorine in household bleach. Sodium chlorate (NaClO3) is used in weed killers, matches, 26 alkali & alkaline earth metals and explosives. Sodium fluoride (NaF) is added to toothpaste to provide protection against dental cavities. Sodium nitrate (NaNO3, also known as Chile saltpeter) is an important source of nitrogen in fertilizers.
The symbol Na for sodium comes from the Latin name for sodium, natrium. The symbol K for potassium comes from its Latin name, kalium. In the first decade of the 1800s, Sir Humphrey Davy established himself as a careful experimenter in the field of electrochemistry. In 1807, in his first attempts to decompose soda ash (NaOH) and potash (KOH), he passed electrical currents through aqueous solutions containing these compounds. However, he succeeded only in decomposing the water into hydrogen and oxygen gases.