Briefly describe your strategies (the steps) for the following: 1. Drawing a Lewis structure 2. Identifying polar bonds and molecules 3. Determining the electronic (electron-domain) and molecular geometries Use most or all of the following terms in this written description: valence electrons, bond dipole, dipole moment, electronegativity, octet rule, expanded octet, lone paires, polar/non-polar molecules. You are NOT required to write the Purpose, Procedure, or Safety.

A polar molecule has a large difference in electronegativity between atoms in a bond. Lewis structure show the valence electrons around atoms in molecules as dots.

In drawing the Lewis structure of a molecule the very first step is to identify the symbol of each element in the molecule and the number of valence electrons in the outermost shell of the atoms of each element. Next is to assign bonds, formal charges or lone pairs to each atom in the molecule as the case may be.

To identify polar molecules, we need to know the electronegativity difference between the atoms that are bonded in the molecule as well as the magnitude of dipole moment in the molecule.

To determine the number of electron domains in a molecule, we need to count the total number of electron pairs around the valence shell of the central atom in the molecule this gives the electronic geometry of the molecule. The molecular geometry is obtained by counting the number of atoms bonded to the central atom in the molecule.

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