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Worksheet: Electron-Pair and Molecular Geometries

Q1:

Which of the following has T-shaped molecular geometry?

  • A S b F 5
  • B B F 3
  • C P F 6
  • D C l F 3
  • E I F 5

Q2:

What is the molecular geometry of B C l 3 ?

  • AOctahedral
  • BSquare planar
  • CTetrahedral
  • DTrigonal planar
  • ETrigonal pyramidal

Q3:

Consider the Lewis structure of water:

H O H

What is the electron-pair geometry?

  • ATrigonal pyramidal
  • BTrigonal planar
  • CSquare planar
  • DTetrahedral
  • EBent

What is the molecular geometry?

  • ABent
  • BTrigonal pyramidal
  • CLinear
  • DTetrahedral
  • ESquare planar

Q4:

Sulfur tetrafluoride, S F 4 , is extremely valuable for the preparation of fluorine-containing compounds used as herbicides (i.e., S F 4 is used as a fluorinating agent).

What is its electron-pair geometry?

  • ASquare pyramidal
  • BTetrahedral
  • CSquare planar
  • DTrigonal bipyramidal
  • EOctahedral

What is its molecular geometry?

  • ASeesaw
  • BTrigonal bipyramidal
  • CSquare planar
  • DTetrahedral
  • EOctahedral

Q5:

What is the electron pair geometry of each of the following molecules or ions?

S F 6

  • ASquare pyramidal
  • BHexagonal planar
  • CSquare bipyramidal
  • DOctahedral
  • EIcosahedral

P C l 5

  • ATrigonal bipyramidal
  • BOctahedral
  • CPentagonal planar
  • DSquare pyramidal
  • ETetrahedral

B e H 2

  • ATetrahedral
  • BBent
  • CLinear
  • D 9 0
  • ETrigonal

C H 3 +

  • ATrigonal planar
  • BTetrahedral
  • CTrigonal pyramidal
  • DBent
  • ET-shaped

Q6:

What is the difference between electron-pair geometry and molecular geometry?

  • AElectron-pair geometry accounts for outer-shell electrons as well as atoms, while molecular geometry is concerned with inner-shell electrons.
  • BMolecular geometry accounts for lone pairs as well as atoms, while electron-pair geometry is concerned only with the atoms.
  • CMolecular geometry is concerned with the rough shape of the entire molecule, while electron-pair geometry is concerned with the geometry around a single atom.
  • DElectron-pair geometry accounts for lone pairs as well as atoms, while molecular geometry is concerned only with the atoms.
  • EElectron-pair geometry accounts for inner-shell electrons as well as outer-shell electrons, while molecular geometry is concerned only with the atoms.