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1. |
What is the chemical formula of beryl? |
A. | Be<sub>3</sub>Al<sub>2</sub>Si<sub>6</sub>O<sub>18</sub> |
B. | Be<sub>3</sub>AlSi<sub>6</sub>O<sub>18</sub> |
C. | Be<sub>3</sub>Al<sub>2</sub>Si<sub>6</sub>O |
D. | BeAl<sub>2</sub>Si<sub>6</sub>O<sub>18</sub> |
Answer» B. Be<sub>3</sub>AlSi<sub>6</sub>O<sub>18</sub> | |