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.
Water and Carbon Dioxide. In a molecule of water, oxygen is by far the more selfish element. It shares four electrons with two hydrogen atoms. If we assign all four electrons to oxygen, we find that oxygen has an oxidation number of -2, while the hydrogen atoms have an oxidation number of +1. In the compound carbon dioxide, one atom of carbon is sharing eight electrons with two atoms of oxygen.