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Zeolites are solid crystalline materials composed of silicon, aluminum, and oxygen atoms arranged in a framework with voids.

1. Zeolites consist of SiO4^4- and AlO4^5- tetrahedra connected in a three-dimensional lattice, forming structures with 4- or 6-membered rings. These structures have pores that can accommodate water and small molecules.
2. The reaction between silicon dioxide and hydrofluoric acid is represented as 6HF + SiO2 -> H2SiF6 + 2H2O.
3. In graphite, each carbon atom is sp2 hybridized, and the unpaired p-orbitals overlap laterally, creating a delocalized π-electron system that spreads across the structure.
4. In diamond, carbon atoms are sp3 hybridized, with each atom forming covalent bonds to four other carbon atoms arranged in a tetrahedral geometry.

Correct answer: Zeolites consist of SiO4^4- and AlO4^5- tetrahedra connected in a three-dimensional lattice, forming structures with 4- or 6-membered rings. These structures have pores that can accommodate water and small molecules.

Solution

Option A correctly describes the structure of zeolites, which consist of SiO4^4- and AlO4^5- tetrahedra linked in a 3D framework with cavities that can trap water and small molecules.

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