Unit 8 Test Review Flashcards
What is the most likely bond angle between Cl-C-Cl in CCl₄?
109.5°
In terms of VSEPR theory, what is the electron domain geometry and molecular geometry of SF₄?
Trigonal bipyramidal, see-saw
What type of intermolecular force is primarily responsible for the higher boiling point of HF compared to HCl?
Hydrogen bonding
Which of the following molecules would have the HIGHEST boiling point?
A)CH₄
B)CH₂F₂
C) CHF₃
D)CH₃F
B) CH₂F₂
In the context of molecular orbital theory, facts about the π bond in ethene (C₂H4) are?
-The bond is side to side overlap of two p orbitals perpendicular to the molecular plane
-The bond consits of one bonding molecular orbital
Which molecule contains a triple covalent bond?
N₂
What is the purpose of using resonance structures in chemistry?
To envision bonding in molecules not adequately described by a single structure
Which of the following best describes a molecular orbital?
An orbital that applies to the entire molecule
What type of bond is formed when atomic orbitals overlap end-to-end?
Sigma bond
What molecular shape would you expect for a molecule with 4 bonding pairs and 0 lone pairs around the central atom?
Tetrahedral
What is the approximate H-O-H bond angle in a water molecule?
105°
Which of the following is NOT true about pi bonds?
They are found in all single bonds
Which of the following would likely have the strongest intermolecular forces HF or HCL?
HF
How do the physical properties of most molecular compounds compare to those of ionic compounds?
Molecular compounds typically have lower melting and boiling points
Which of the following statements about van der Waals forces is NOT true?
They are the strongest type of intermolecular force
