Which of the following is true

CO2 composed of discrete CO2 molecules, but silica has polymeric 3D structureSiO2 [MW=60] molecules are heavier than "CO2" [MW=44]→CO2>SiO2>GeO2As the metallic nature increasesBasic character of oxide increases & Acidic nature of Oxide decreases∴ CO2 is stronger acid than SiO2Due to threedimenional network struture SiO2 has high melting point