$(4$ points$)$ Draw a Lewis structure for an ion with the formula is the central atom$)$ and give an estimate of the O$-$Si$-$O bond angle $($give a rough estimate, you do not have to specify "greater than" or "less than"$).$ Your answer must satisfy the octet rule for all atoms. If the ion engages in resonance, only draw one resonance form.

$(6$ points$)$ One resonance structure of a molecule is shown. Draw TWO $($only two$)$ additional resonance structures for the molecule. If you draw more than two structures, you will lose points if any are incorrect.