Question

what are clays ? give the names and chemical formula of three common clays​

Answer 1

Some clay minerals may be expressed using ideal chemical formulas as the following:

Some clay minerals may be expressed using ideal chemical formulas as the following: 2SiO2·Al2O3·2H2O (kaolinite),

Some clay minerals may be expressed using ideal chemical formulas as the following: 2SiO2·Al2O3·2H2O (kaolinite), 4SiO2·Al2O3·H2O (pyrophyllite),

Some clay minerals may be expressed using ideal chemical formulas as the following: 2SiO2·Al2O3·2H2O (kaolinite), 4SiO2·Al2O3·H2O (pyrophyllite), 4SiO2·3MgO·H2O (talc),

Some clay minerals may be expressed using ideal chemical formulas as the following: 2SiO2·Al2O3·2H2O (kaolinite), 4SiO2·Al2O3·H2O (pyrophyllite), 4SiO2·3MgO·H2O (talc), and 3SiO2·Al2O3·5FeO·4H2O (chamosite).

Some clay minerals may be expressed using ideal chemical formulas as the following: 2SiO2·Al2O3·2H2O (kaolinite), 4SiO2·Al2O3·H2O (pyrophyllite), 4SiO2·3MgO·H2O (talc), and 3SiO2·Al2O3·5FeO·4H2O (chamosite). The SiO2 ratio in a formula is the key factor determining clay mineral types.

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Answer 2

Answer:

$\huge\tt\underline{Question}$

what are clays?give the names and chemical formula of three common clays.

$\huge\tt\underline{clay}$

an earthy material that is plastic when moist but hard when fired, that is composed mainly of fine particles of hydrous aluminum silicates and other minerals, and that is used for brick, tile, and pottery.

three common clays:

$\huge\tt\underline{nacrite}$

ఌ︎ Nacrite:Al2Si2O5(OH)4

$\huge\tt\underline{Halloysite}$

ఌ︎ Halloysite:Al₂Si₂O₅(OH)₄

$\huge\tt\underline{Kaolinite}$

ఌ︎ Kaolinite:(Al2O3(SiO2)2(H2O)2),a hydrous aluminosilicate.