题目内容

Which of the following clay minerals is nonexpanding 2: 1 clay mineral?

A. Montmorillonite
B. Kaolinite
C. Vermiculite
D. Illite

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Aluminum-oxygen octahedron consists of one aluminum ion and ( ) oxygen ions.

A. four
B. five
C. six
D. seven

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A. Inorganic colloids
B. Organic colloids
C. Organo-mineral colloids
D. None of the above

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A. one
B. two
C. three
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