CHEMISTRY · Single correct · AP · Chemistry · Compound Structure and Properties · Compound Structure and Properties
Problem
Carbon dioxide is gas, while SiO2 is solid because :
(1) CO2 is a linear molecule, while SiO2 is angular
(2) van der Waals' forces are very strong in SiO2
(3) CO2 is covalent, while SiO2 is ionic
(4) Si cannot form stable bonds with O, hence Si has to form a 3D lattice