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Zeolites are minerals of the composition M_((x/n)) [[AlO_2]_x (SiO_2)_y].ZH_2O Where 'n' is the charge on the metal cation. These structure contain various ring which results in formation of a fairly open structure containing channels and cavities at molecular level (2 to 11A) in diameter). They may be used to trap molecules of various sizes, this makes them very useful as "Selective absorbants" or as "molecular sieves". In the structure of zeolites: (A) Each Al atom is attached to 'p' oxygen atoms directly (B) Each Si atom is attached to 'q' oxygen atoms directly (C) Each Al atom is attached to 'r' Si atoms directly (D) Each O atom is # hydridized.Find (p+q+r+t) |
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