extreme delicacy or subtlety in action, performance, skill, discrimination, taste, etc. 2. skill in handling a difficult or highly sensitive situation; adroit and artful management: exceptional diplomatic finesse. 3. a trick, artifice, or stratagem.
For H2SO4 we have a total of 32 valence electrons. Put a pair between the atoms. We're forming chemical bonds here. We've used 8, 10, 12, and then around the outside to fill the octets on the Oxygens, 14, and 32.So this looks like a pretty good Lewis structure for H2SO4. In the H 2 SO 4 Lewis structure Sulfur is least electron electronegative atom and goes in the center of the Lewis structure. 2  When we have an H (or H2) in front of a polyatomic molecule (like CO 3, SO 4, NO 2, etc.) we know that it's an acid.
Construct a Molecular orbital diagram for the O 2 molecule. There are six valence electrons on a neutral oxygen atom and therefore 12 valence electrons in an O 2 molecule. These electrons are added to the diagram in the figure below, one at a time, starting with the lowest energy molecular orbital.