Identify the incorrect statement about silica | vedclass

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Question

(D) Silica $(SiO_2)$ is a covalent network solid with a three-dimensional tetrahedral structure,where each silicon atom is bonded to four oxygen atoms

Vedclass · Accepted Answer

Like graphite,it has two-dimensional structure.

Vedclass · Answer

(D) Silica $(SiO_2)$ is a covalent network solid with a three-dimensional tetrahedral structure,where each silicon atom is bonded to four oxygen atoms. Option $A$ is correct because $SiO_2$ is acidic and reacts with bases. Option $B$ is correct because $SiO_2$ is inert to most acids but reacts with hydrofluoric acid $(HF)$ to form silicon tetrafluoride $(SiF_4)$. Option $C$ is correct because $SiO_2$ reacts with $NaOH$ to form sodium silicate $(Na_2SiO_3)$. Option $D$ is incorrect because,unlike graphite which has a two-dimensional layered structure,silica has a three-dimensional giant covalent network structure.

Identify the incorrect statement about silica $(SiO_2)$.

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