please I need help for the answers.

1. A) Identify what is incorrect about the following Lewis Structure. B) What rule does this violate? C) Draw TWO Lewis Structures, one of an example of a compound that follows this rule and a different Lewis Structure of an example that is an exception to this rule. 2. A) Given the following compound, SiO2, why is the underlined atom expected to be the central atom? B) Are there any exceptions to this rule? 3. Identify the central atom in each of the following molecules: SiCl4 central atom: CO2 central atom: HOCl central atom