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Lab Shapes of Molecules.

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Presentation on theme: "Lab Shapes of Molecules."— Presentation transcript:

1 Lab Shapes of Molecules

2 Lab – Shapes of Molecules
Procedure: Determine the central atom (i.e. atom with the most bonding electrons). Draw the Lewis Diagram (Electron Dot). If there exists two central atoms, draw a symmetric molecule. Analyze one central atom to determine the shape of the molecule. Construct the molecule, using the ball and stick model kits provided. Draw a 3-D picture to represent the shape.

3 # Atoms Bonded around central atom
Shapes # Lone Pairs # Atoms Bonded around central atom Name of Shape 1 linear 2 3 trigonal planar 4 tetrahedral trigonal pyramidal angular 5 trigonal bipyramidal 6 octahedral

4 NI3 . N : . N : : . : . I I : . I : . I 1 3 Trigonal pyramidal
Molecular Substance Lewis Diagram For Each Central Atom Name To Represent Predicted Shape Representation For Actual # lone Pairs Around Central atom # atoms bonded to central atom 1 3 Trigonal pyramidal NI3 . N : . N : : . : . I I : . I : . I

5 Atoms and Bonds Black Carbon Yellow Hydrogen Red Oxygen
Colour Atom Black Carbon Yellow Hydrogen Red Oxygen Blue (3 Holes) Nitrogen Orange Halogens (F, Cl, Br, I) Purple Green Single bonds = 1 stick Double bonds = 2 springs Triple bonds = 3 springs

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