Please select the proper description of the silicon-oxygen tetrahedron.
a. a pyramidal shape with four triangular faces, an oxygen ion at three vertices and one oxygen ion in the center, and a silicon ion at the remaining vertex
b. a pyramidal shape with four triangular faces, a silicon ion at each vertex, and an oxygen ion at the center of the pyramid
c. a pyramidal shape with four triangular faces, an oxygen ion at each vertex, and a silicon ion at the center of the pyramid
d. a pyramidal shape with three triangular faces, an oxygen ion at each vertex, and a silicon ion at the center of the pyramid
e. a pyramidal shape with three triangular faces, a silicon ion at each vertex, and an oxygen ion at the center of the pyramid
c. a pyramidal shape with four triangular faces, an oxygen ion at each vertex, and a silicon ion at the center of the pyramid
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Indicate whether the statement is true or false.
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A) 1 B) 2 C) 3 D) 4
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A. Pegmatite B. Calcite C. Evaporite D. Laterite