Chemistry - Complete Pblock- Question with Solution | TestHub

Silica (SiO₂) is a three-dimensional covalent network solid where each silicon atom is tetrahedrally bonded to four oxygen atoms. It is chemically inert and resists the attack of HCl and most other acids due to its high bond enthalpy. However, it is attacked by strong bases like NaOH to form silicates and reacts with HF to form SiF₄ (a reaction used for etching glass). Consequently, all given options (A, B, C, and D) are correct descriptions of its properties.