Question

In Silicon dioxide

• A. there are double bonds between silicon and oxygen atoms
• B. silicon atom is bonded to two oxygen atoms
• C. each silicon atom is surrounded by two oxygen atoms and each oxygen atom is bonded to two silicon atoms
• D. each silicon atom is surrounded by four oxygen atoms and each oxygen atom is bonded to two silicon atoms.
  

Answer 1

The correct option is D each silicon atom is surrounded by four oxygen atoms and each oxygen atom is bonded to two silicon atoms.


In $Si{O}_2$ (quartz), each of O - atom is shared between two $Si{O}_4^{4-}$ tetrahedra.