Part A Give the approximate bond angle for a molecule with a tetrahedral shape.

Question

Part A

Give the approximate bond angle for a molecule with a tetrahedral shape.

90o

105o

109.5o

120o

180o

Part B

Determine the electron geometry (eg) and molecular geometry(mg) of the BCl3 molecule.

eg=trigonal planar, mg=trigonal planar

eg=tetrahedral, mg=trigonal planar

eg=tetrahedral, mg=trigonal pyramidal

eg=trigonal planar, mg=bent

eg=trigonal bipyramidal, mg= T-shaped

Part C

Determine the electron geometry (eg) and molecular geometry (mg) of CO32- the carbonate anion.  

eg=tetrahedral, mg=tetrahedral

eg=tetrahedral, mg=trigonal pyramidal

eg=trigonal planar, mg=bent

eg=trigonal planar, mg=trigonal planar

eg=trigonal bipyramidal, mg=T-shaped

90o

105o

109.5o

120o

180o

Explanation / Answer

Part A) 109.5o

Part B) eg = tironal planar , mg = trigonal planar

part C) eg = tironal planar , mg = trigonal planar

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