EXPERIMENTAL PROCEDURE Constructing Models Guidelines for Constructing Molecular Models 1. Each colored ball in your kit

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Experimental Procedure Constructing Models Guidelines For Constructing Molecular Models 1 Each Colored Ball In Your Kit 1 (52.07 KiB) Viewed 22 times

Experimental Procedure Constructing Models Guidelines For Constructing Molecular Models 1 Each Colored Ball In Your Kit 2 (32.93 KiB) Viewed 22 times

EXPERIMENTAL PROCEDURE Constructing Models Guidelines for Constructing Molecular Models 1. Each colored ball in your kit corresponds to a different utom. Rafet to the Hint below to select the correct colored ball for each type of stom Ball Color Number of Numberin boles Atom Type the kid Black 4 C 4 White 1 H 12 Blue 4 N 3 Green 6 4 Bor CI Green B 1 Purple 4 2 Torp Red 4 9 Yellow 4 S 2 * This ball has only one hole since H obeys the duet rule. ** Since this ball has only three holes it is used to represent an atom that has a sextet (6 electrons) not an octet 4 2 The ball selected must have the same number of holes in it as the atom has bonding pairs + lone pairs + single non-bonding electrons. 3. Use the short grey sticks for single bonds. There should be 13 in your kit Use the long flexible grey sticks for double or triple bonds. There should be 16 in your kit. To create the bonds insert the sticks into holes on each of the balls. It will be necessary to bend the sticks in order to create double or triple bonds. 5. Use the flat beige balloon shaped pieces for representing the position of lone pairs of electrons. There should be 42 in your kit 6. Use a short purple stick for representing a single non-bonding electron. There should be 2 in your kit After you have constructed the models for each part of the experiment have your instructor verify that they are built correctly and initial the data page before answering the question on the data table. Part 1: Construct the models for N, O, and NO . Have your instructor verify that the models have been built correctly. Determine whether each molecule is polar or non-polar, its bond angles, and its molecular shape. Record this information on the data table. Before taking apart these models answer Question 1 on the data table. 155 Overall page number 155
Student Name Course/Section Date Instructor PRE-LAB ASSIGNMENT 1. For each of the molecules or polyatomic ions in the data table of this experiment calculate the total number of valence electrons. Show your calculation on the data table in pencil so that it may be corrected before building the model. 2. Draw Lewis structures for each of the molecules and polyatornic ions on the data table of this experiment. For parts 1-6, if more than one resonance structure that obeys the octet rule is possible then draw any one of these structures. Draw all of the structures in pencil so that they may be corrected before building the model. Clearly show all bond pair electrons as lines and lone pair electrons as pairs of dots or a single line. 153 Overall page number 153