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.
Example: Let's determine the number of valence electrons in the chlorate (ClO 3 -) ion. A chlorine atom (Group VIIA) has seven valence electrons and each oxygen atom (Group VIA) has six valence electrons. Because the chlorate ion has a charge of -1, this ion contains one more electron than a neutral ClO 3 molecule.Thus, the ClO 3 - ion has a total of 26 valence electrons. ClO 3 - : 7 + 3(6) + 1 = 26. The second step in this process involves deciding which atoms in the molecule are connected by covalent bonds.ecause the chlorate ion has a charge of -1, this ion contains one more electron than a neutral ClO 3 molecule. Thus, the ClO 3 - ion has a total of 26 valence electrons. ClO 3 - : 7 + 3(6) + 1 = 26. The second step in this process involves deciding which atoms in the molecule are connected by covalent bonds.