单词	sodium
释义	sodium /ˈsəʊdɪəm / noun [mass noun] The chemical element of atomic number 11, a soft silver-white reactive metal of the alkali-metal group. (Symbol: Na) Glauconite is close in composition to muscovite but has some iron, magnesium, sodium, and calcium.... The second most abundant ion was potassium, followed by sodium, magnesium, manganese and iron. For example, lithium, sodium, and potassium comprised a triad of soft, highly reactive metals. Origin Early 19th century: from soda + -ium. Rhymes odeum, odium, plasmodium, podium
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