Review of Gen Chem

Draw an acceptable Lewis structure for dihydroxyacetone, (HOCH₂)₂CO, an ingredient in sunless tanning products, such that ALL atoms have a zero formal charge.  Assume the atoms are arranged as drawn.

Predict the geometry around C #1

• linear

• trigonal planar

• tetrahedral

• bent

Predict the geometry around N #2

• linear

• tetrahedral

• trigonal planar

• trigonal pyramidal

Predict the geometry around C #3

• linear

• trigonal planar

• tetrahedral

• bent

Predict the geometry around C #4

• tetrahedral

• trigonal planar

• trigonal pyramidal

• linear

Predict the geometry around O #5

• linear

• bent

• tetrahedral

• trigonal planar

Label the polar bonds around C3 using the symbols δ+ and δ–.  

Predict the hybridization around C #1

• sp

• sp²

• sp³

• p

Predict the hybridization around N #2

• sp

• sp²

• sp³

• p

Predict the hybridization around C #3

• sp

• sp²

• sp³

• p