Lewis Structure

Empirical formulas represent the ratio of atoms in a formula. It is expressed in the simplest, small, whole number ratio. The molecular formula can either be the empirical formula, or a multiple of the empirical

Formulas for compounds can be written as empirical or molecular formulas where empirical formulas are the simplest formula of a compound and a molecular formula is the actual, or true, formula of a compound. These are the same form in ionic compounds, but may differ in covalent. For example, in Benzene, a covalent

2. Using the atom and bond library below, construct the following molecule. It may be

The formula of the simplest possible compound containing only C and I atoms is CI4.

What is the molecular geometry around a central atom that is sp2 hybridized, has three sigma bonds, and one pi bond?

What is its melting point? 1,405 K: 1,132 C: 2,070 F. boiling point? 4,404 K: 4,131 C: 7,468 F

33. Electron dot model is a way of representing the valence electron of an atom.

Draw correct Lewis structures to model covalently bonded molecules when given the name or formula of the molecule.

Sketch the Bohr model for the following elements (don’t worry about the number or neutrons):

10. The sum of the oxidation numbers of all atoms in a polyatomic ion is equals to the charge of the ion.

For the following molecules determine which atoms are bonded (write the symbols with a bond between them), the electronegativity difference between them, and the type of chemical bond it represents. If the bond is ionic, state what ions are produced. If the bond is polar covalent, indicate the direction of the dipole on the symbols from the first part.

Dictionary of organic compounds, 6th edition, Chapman and Hall, London, Volume 3(& Volume 6), 1996 Maria Lindsay and Sean P. Hickey, Organic chemistry lab 2 manual, department of Chemistry University of New Orleans

Carbon has unique properties that allow macromolecules to form. One is that carbon can form four covalent bonds. This is because of the four valence electrons it has. A carbon atom can have a triple bond with one atom and still have an extra electron to share with another atom. Carbon bonds can take on different shapes: linear, branched, or ring-shaped. Carbon also bonds with functional groups. Functional groups are molecules with unique chemical characteristics and properties. These include hydroxyl and phosphate groups. Carbon containing molecules can have multiple forms. These different forms are called isomers. These different molecules can have the same molecular formula but will have different shapes and characteristics. Structural isomers

The empirical formula that was determined was different from that of the “true” compound mentioned. The empirical formula determined was:

Next, I observed my Proton NMR which had only one peak. The multiplicity is six. Therefore, I have six hydrogens. Using this information, I was able to conclude that my unknown is