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Which type of sillcate compound, Beryl (...

Which type of sillcate compound, Beryl `(Be_(3)Al_(2)Si_(6)O_(18))` is?

A

Chain silicate

B

Cyclic sillicate

C

Planar silicate

D

Disilicate

Text Solution

AI Generated Solution

The correct Answer is:
To determine the type of silicate compound that Beryl `(Be_(3)Al_(2)Si_(6)O_(18))` is, we can follow these steps: ### Step 1: Identify the Composition of Beryl Beryl is represented by the chemical formula `Be_(3)Al_(2)Si_(6)O_(18)`. This formula indicates that it contains beryllium (Be), aluminum (Al), silicon (Si), and oxygen (O). ### Step 2: Determine the Presence of Aluminum In the formula, we see that there are aluminum atoms present. The presence of aluminum in the silicate structure indicates that Beryl is an aluminosilicate. ### Step 3: Analyze the Silicate Structure The structure of Beryl contains silicate tetrahedra, which are the fundamental building blocks of silicate minerals. Each silicon atom is surrounded by four oxygen atoms, forming a tetrahedral shape. ### Step 4: Count the Silicate Units In the formula `Si_(6)O_(18)`, we can see that there are 6 silicon atoms and 18 oxygen atoms. This indicates that there are 6 silicate tetrahedra in the structure. ### Step 5: Identify the Type of Silicate Beryl's structure is characterized by a cyclic arrangement of silicate tetrahedra. The silicate tetrahedra are linked together in a ring-like structure, which is a defining feature of cyclic silicates. ### Conclusion Based on the analysis, Beryl `(Be_(3)Al_(2)Si_(6)O_(18))` is classified as a **cyclic silicate** or **cyclic aluminosilicate**. ---
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