Lewis structures/molecular shapes

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1. The total number of valence electrons in carbon tetrachloride (CCl4) is:
22
11
32
28

2. The number of bonding electron pairs and lone pairs of electrons surrounding the central atom in CCl4 is:
4 and 2, respectively
4 and 4, respectively
4 and 0, respectively
2 and 4, respectively

3. The shape of the CCl4 moleculecan be described best as:
linear
bent
trigonal pyramid
tetrahedral

4. The ball-and-stick models are built in this experiment in order to:
facilitate drawing of the Lewis structure
help you visualize the shape of the molecules
help in the process of counting lone pairs of electrons
Better see the bonding and lone electron pairs

5. What is the first thing that you need to do with the balls and sticks after you take them off the instructor's cart?