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Molecular models are useful for visualizing molecular shapes and for thinking ab

ID: 1009211 • Letter: M

Question

Molecular models are useful for visualizing molecular shapes and for thinking about molecular properties. It is also quite common to use computer graphics to assist in visualization and analysis of molecules This is particularly true for large and complex molecules, such as proteins where building a physical model would be a difficult task Molecular models consist of colored centers (atoms) that correspond to various common geometries and connecting joints to link the centers The connecting joints come in longer and shorter lengths to represent longer and shorter bonds The shorter lengths indicate multiple bonds or bonds to hydrogen; the longer lengths indicates single bonds The model colors of atoms usually follow a fairly standard pattern Black C Red O White H Blue N Purple P Yellow S Silver metals Green halogen (chlorine) Complete the table below by (a) finding an example of a molecule or ion with the given structure, (b) predicting the molecular geometry, (c) building a model, and (d) estimating the bond angles A represents a central atom. B represents a terminal atom, and E represents an unshared electron pair on the central atom We have completed the first line as an example

Explanation / Answer

Post one more question to get the remaining answers

AB2E

Example - O3, Geometry - Trigonal Planar, Angle - 120 degrees

AB3

Example - CO3(2-), Geometry - Trigonal Planar, Angle - 120 degrees

AB4

Example - CH4, Geometry- Tetrahedral, Angle - 109 degrees 28 minutes

AB3E

Example - PCl3,Geometry - Trigonal Pyramidal

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