Sodium hydrogen pyrosulfite, NaHS2O5, contains the metabisulfite anion, which has the following skeletal structure:
...........................................O...........O........................[1-]
............................................l............l
............................................l............l
................H--------O----------Sa--------Sb---------O
............................................l
............................................l
...........................................O
(The best I could do at drawing the structure on here. Justignore the periods, and the charge above is (-1).)
Draw the Lewis (dot) structure for this anion:
What is the geometry around sulfur Sa?
Around sulfur Sb?
Draw a representation of the 3-D structure of the anion, including only the bonding-pair electrons, and any sulfur lone-pair electrons.
What is the orientation of the oxygen atoms with respect to each other around the S?S bond?