those metals which occurs in nature are silicate minerals and their oxides are ?

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02-09-2021
Chemistry

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those metals which occurs in nature are silicate minerals and their oxides are ?

Sagot :

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Khansamueenidn Khansamueenidn · Answer 1 · 2021-09-02T07:34:41-04:00

Answer:

Since the middle of the 19th century, minerals have been classified on the basis of their chemical composition. Under this scheme, they are divided into classes according to their dominant anion or anionic group (e.g., halides, oxides, and sulfides).

Explanation:

Apart from the free gases in Earth’s atmosphere, some 20 elements occur in nature in a pure (i.e., uncombined) or nearly pure form. Known as the native elements, they are partitioned into three families: metals, semimetals, and nonmetals. The most common native metals, which are characterized by simple crystal structures, make up three groups: the gold group, consisting of gold, silver, copper, and lead; the platinum group, composed of platinum, palladium, iridium, and osmium; and the iron group, containing iron and nickel-iron. Mercury, tantalum, tin, and zinc are other metals that have been found in the native state.

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