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CHEM 1&2 Lab Manual & worksheets pg 105

CHEM 1&2 Lab Manual & worksheets pg 105 -...

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Experiment 9: VSEPR General Chemistry I and II Lab Manual Dakota State University Page 105 of 232 Next, we look for the number of "sets" about the central atom. A set is basically a pair of electrons, kind of. Hmmm, how to put this. Let's put it in equation form: # sets = # L.P. + # Bonded atoms where # L.P. is the number of lone pair, or non-bonding pairs, of electrons assigned to the central element, and #Bonded atoms is the total number of additional atoms to which the central atom is attached. The number of lone pairs, or the number of additional atoms bonded to any atom other than the central atom are not included; the number of sets, or set number, applies only to the central atom. There are two things that must be made note of. Note 1: The number of bonded atoms refers to the number of atoms bonded directly to the central element (only) regardless of the order of the bond (single, double, triple). Even if it is a multiple bond, all electron pairs must occupy the region of space between the nuclei (to some extent), so it is irrelevant what type of bond it is.
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