In silicon dioxide:

Options

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

D

Explanation

Silicon dioxide exhibits polymorphism.It is a network solid in which each `Si` atom is surrounded tetrahedrally by four oxygen atoms.
`-O-undersetundersetunderset(|)(O)(|)oversetoversetoverset(|)(O)(|)(Si)-O-undersetundersetunderset(|)(O)(|)oversetoversetoverset(|)(O)(|)(Si)-O-`