TS EAMCET · Chemistry · p Block Elements (Group 13 & 14)
How many nearest neighbours are there for Si and O atoms in quartz crystals?
- A \(4(\mathrm{Si}) ; 2(\mathrm{O})\)
- B \(4(\mathrm{Si}) ; 4(\mathrm{O})\)
- C \(2(\mathrm{Si}) ; 2(\mathrm{O})\)
- D \(3(\mathrm{Si}) ; 2(\mathrm{O})\)
Answer & Solution
Correct Answer
(A) \(4(\mathrm{Si}) ; 2(\mathrm{O})\)
Step-by-step Solution
Detailed explanation
Quartz is \(\mathrm{SiO}_2\) (silicon dioxide) in which \(\mathrm{SiO}_2\) units are present as giant crystal. In \(\mathrm{SiO}_2\) crystal each \(\mathrm{Si}\)-atom is surrounded by 4 (O-atoms), i.e. has four nearest neighbours and each \(\mathrm{O}\)-atom is surrounded by two…
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