Which of the following shapes does not represent a 4 electron domain?

Molecule: RnF₄

Total number of valence electrons:  e^-

Parent geometry: 

Molecular geometry: 

Molecule: BeF₂

Total number of valence electrons:  e^-

Parent geometry: 

Molecular geometry: 

Molecule: BCl₃

Total number of valence electrons:  e^-

Parent geometry: 

Molecular geometry: 

Chemistry Drawing Questions

Consider the formic acid molecule, CHOOH.

What is the parent geometry and molecular geometry about the carbon atom and about the hydroxyl oxygen atom?

Carbon:

• Parent geometry - 
  Linear

  Trigonal Planar

  Tetrahedral

  Trigonal Bipyramidal

  Octahedral
• Molecular geometry - 
  Linear

  Trigonal Planar

  Bent

  Tetrahedral

  Trigonal Pyramidal

  Trigonal Bipyramidal

  Disphenoidal

  T-shaped

  Octahedral

  Square Pyramidal

  Square Planar

Hydroxyl oxygen:

• Parent geometry - 
  Linear

  Trigonal Planar

  Tetrahedral

  Trigonal Bipyramidal

  Octahedral
• Molecular geometry - 
  Linear

  Trigonal Planar

  Bent

  Tetrahedral

  Trigonal Pyramidal

  Trigonal Bipyramidal

  Disphenoidal

  T-shaped

  Octahedral

  Square Pyramidal

  Square Planar

Formic acid can be deprotonated in alkali environments to form the formate ion, CHOO^-.

What is the bond order for the O…C…O bond in the formate ion? {Hint: Single bonds have a bond order of 1, double bonds have a bond order of 2, etc. You'll learn more about this in Week 5!}

• Bond order: 

Note: When using Lewis structures to describe the distribution of electrons in molecules, we define bond order as the number of bonding pairs of electrons between two atoms. Thus a single bond has a bond order of 1, a double bond has a bond order of 2, and a triple bond has a bond order of 3.

What is the molecular geometry of hydrogen sulfide?

Molecule: PO₂^-

Total number of valence electrons:  e^-

Parent geometry: 

Molecular geometry: 

Molecule: SeF₅^-

Total number of valence electrons:  e^-

Parent geometry: 

Molecular geometry: 

Molecule: ICl₃

Total number of valence electrons:  e^-

Parent geometry: 

Molecular geometry: 

What is the parent geometry of hydrogen sulfide?