When the silicate structure changes from isolated pattern to frames, the ratio of silicon atoms to oxygen atoms will increase.
Silicate Structure is simply defined as the basic structural unit of all silicate minerals is the silicon tetrahedron in which one silicon atom is surrounded by and bonded to four oxygen atoms, each at the corner of a regular tetrahedron.
Now, when the silicate structure changes from isolated pattern to frames, what happens is that there is a rearrangement of the individual atoms and as such the ratio of silicon atoms to oxygen atoms will increase.
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