What are the two possible Lewis structures for H₃AsO₃? 

Hint: One structure has As with three covalent bonds and the other has As with 5 covalent bonds

Nitrous acid is an unstable, weak oxyacid of nitrogen. The molecular formula of nitrous acid is HNO₂. Draw a Lewis structure for this compound.

Draw a suitable Lewis dot structure for bromous acid (HBrO₂).