Draw the Lewis structure for the following molecule: 

${\mathrm{BeF}}_2$

Draw the Lewis structure for the following ion: 

${\mathrm{CO}}_3^{2-}$

Draw the Lewis structure for the following molecule: 

$\mathrm{HCOOH}$

Discuss the shape of the following molecule using the VSEPR model: 

$\mathrm{B}\mathrm{e}\mathrm{C}{\mathrm{l}}_2$

Discuss the shape of the following molecule using the VSEPR model: 

${\mathrm{BCl}}_3$

Discuss the shape of the following molecule using the VSEPR model:

${\mathrm{SiCl}}_4$

Discuss the shape of the following molecule using the VSEPR model: 

${\mathrm{AsF}}_5$