what factors affect the physical states and structures of oxides of elements?

Question

please answer correctly

Answer 1

1. The structure. Meaning whether single-molecule, crystalline, or polymeric.
2. The molecular weight. Meaning of single molecules.
3. Hydrogen bonding. The case of water.

For example, CO, CO2, NO, NO2, OF2 are all single molecule gases. SiO2 is an indefinite polymeric network of Si's each bonded to four O's, each of which is bonded to two Si's. H2O is a liquid at STP because of the attraction of slightly positively charged H's for the slightly negatively charged O's. CaO is a solid in which there are Ca2+ and O 2- ions locked in a crystal lattice in a regular pattern at fixed distances ands relations to one another.