Answer
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Hint: For this problem, we have to study the three-dimensional structure of the given molecules. As the 3-D structure will have the most complex structure and consist of silicon, so the molecule which has silicon in the complex structure will be the correct answer.
Complete step by step answer:
- In the given question, we have to explain the correct examples of three - dimensional silicates.
- As we know that the minerals which consist of silica and oxygen in the tetrahedral form that is $\text{SiO}_{4}^{-4}$ unit is called the silica mineral.
- There are many forms of silicate ions such as sheet silicates, double-chain silicate, chain silicates, cyclic silicates, three - dimensional silicates, etc.
- In three - dimensional silicates, the oxygen atoms that are present in the silicates are shared with the adjacent tetrahedron.
- The examples of the three - dimensional silicates are zeolites ultramarines, feldspar, etc which are found in the crystalline form.
- So, we can say that the molecules in option A, B and C are the examples of three - dimensional silicates.
- Moreover, when the silica is replaced by the aluminium atom then the structure is known as aluminosilicates which are also three - dimensional.
- Whereas the beryl is an example of cyclic silicate because three silicate structures make a ring-like structure or cyclic structure.
- The molecular formula of the beryl is $\text{B}{{\text{e}}_{3}}\text{A}{{\text{l}}_{2}}{{(\text{Si}{{\text{O}}_{3}})}_{6}}$ whereas the molecular formula of feldspar is $\text{KAlS}{{\text{i}}_{3}}{{\text{O}}_{8}}$ and the molecular formula of ultramarines will be $\text{N}{{\text{a}}_{8}}{{(\text{SiAl}{{\text{O}}_{4}})}_{6}}\text{.(}{{\text{S}}_{3}}{{)}_{6}}$.
So, the correct answer is “Option A, B and C”.
Note: The structure of the zeolite is complex and 3D dimensional as shown below:
here the grey coloured circles are silicon or aluminium and red coloured balls are oxygen atoms.
Complete step by step answer:
- In the given question, we have to explain the correct examples of three - dimensional silicates.
- As we know that the minerals which consist of silica and oxygen in the tetrahedral form that is $\text{SiO}_{4}^{-4}$ unit is called the silica mineral.
- There are many forms of silicate ions such as sheet silicates, double-chain silicate, chain silicates, cyclic silicates, three - dimensional silicates, etc.
- In three - dimensional silicates, the oxygen atoms that are present in the silicates are shared with the adjacent tetrahedron.
- The examples of the three - dimensional silicates are zeolites ultramarines, feldspar, etc which are found in the crystalline form.
- So, we can say that the molecules in option A, B and C are the examples of three - dimensional silicates.
- Moreover, when the silica is replaced by the aluminium atom then the structure is known as aluminosilicates which are also three - dimensional.
- Whereas the beryl is an example of cyclic silicate because three silicate structures make a ring-like structure or cyclic structure.
- The molecular formula of the beryl is $\text{B}{{\text{e}}_{3}}\text{A}{{\text{l}}_{2}}{{(\text{Si}{{\text{O}}_{3}})}_{6}}$ whereas the molecular formula of feldspar is $\text{KAlS}{{\text{i}}_{3}}{{\text{O}}_{8}}$ and the molecular formula of ultramarines will be $\text{N}{{\text{a}}_{8}}{{(\text{SiAl}{{\text{O}}_{4}})}_{6}}\text{.(}{{\text{S}}_{3}}{{)}_{6}}$.
So, the correct answer is “Option A, B and C”.
Note: The structure of the zeolite is complex and 3D dimensional as shown below:
here the grey coloured circles are silicon or aluminium and red coloured balls are oxygen atoms.
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