AP Chemistry Multiple Choice Questions on Molecular Geometry and Hybridization

Question

Hey everyone! 👋 Let's tackle molecular geometry and hybridization in AP Chemistry! This stuff can be tricky, but with a good review and some practice, you'll be rocking it in no time. Here's a quick study guide and a quiz to help you master these concepts. Good luck!🍀

cristian373 · Accepted Answer

⚛️ Quick Study Guide

📐 VSEPR Theory: Valence Shell Electron Pair Repulsion theory predicts molecular geometry based on minimizing electron pair repulsion around a central atom.
  ✍️ AXE Notation: Use $AX_mE_n$ to represent molecules, where A is the central atom, X is the number of bonded atoms, and E is the number of lone pairs.
  ✨ Common Geometries:
    
      Linear: $AX_2$ (e.g., $CO_2$)
      Trigonal Planar: $AX_3$ (e.g., $BF_3$)
      Tetrahedral: $AX_4$ (e.g., $CH_4$)
      Trigonal Pyramidal: $AX_3E$ (e.g., $NH_3$)
      Bent: $AX_2E_2$ (e.g., $H_2O$)

🧪 Hybridization: Describes the mixing of atomic orbitals to form new hybrid orbitals for bonding.
    
      $sp$: Linear
      $sp^2$: Trigonal Planar
      $sp^3$: Tetrahedral
      $sp^3d$: Trigonal Bipyramidal
      $sp^3d^2$: Octahedral

⚡ Sigma ($\sigma$) and Pi ($\pi$) Bonds: Single bonds are $\sigma$ bonds. Double bonds consist of one $\sigma$ and one $\pi$ bond. Triple bonds consist of one $\sigma$ and two $\pi$ bonds.
  💡 Tips: Draw Lewis structures first! Then, determine the AXE notation to predict geometry and hybridization.

🧪 Practice Quiz

Which of the following molecules has a tetrahedral molecular geometry?
    
      $BF_3$
      $CO_2$
      $CH_4$
      $H_2O$

What is the hybridization of the central atom in $SF_6$?
    
      $sp^3$
      $sp^3d$
      $sp^3d^2$
      $sp^2$

Which of the following molecules is linear?
    
      $H_2O$
      $NH_3$
      $CO_2$
      $SO_2$

What is the molecular geometry of $NH_3$?
    
      Tetrahedral
      Trigonal Planar
      Trigonal Pyramidal
      Bent

How many sigma ($\sigma$) and pi ($\pi$) bonds are in a molecule of $C_2H_2$?
    
      2 $\sigma$ and 2 $\pi$
      3 $\sigma$ and 2 $\pi$
      3 $\sigma$ and 3 $\pi$
      5 $\sigma$ and 0 $\pi$

What is the bond angle in a molecule with trigonal planar geometry?
    
      90°
      109.5°
      120°
      180°

Which of the following molecules has a bent molecular geometry?
    
      $BeCl_2$
      $CO_2$
      $H_2S$
      $BF_3$

Click to see Answers
  
    C
    C
    C
    C
    B
    C
    C

AP Chemistry Multiple Choice Questions on Molecular Geometry and Hybridization

🚀 Can't Find Your Exact Topic?

1 Answers

⚛️ Quick Study Guide

🧪 Practice Quiz

Join the discussion