Covalent Bonding and Molecular Geometry Quiz

What is the primary focus of VSEPR theory?

• Determining electron configurations

• Predicting molecular weights

• Calculating formal charges

• Predicting molecular structure and bond angles

Which of the following describes resonance?

• A method to calculate molecular weights

• A single Lewis structure that accurately represents a molecule

• A technique to determine bond angles

• The average of multiple Lewis structures for a molecule

What is the electron pair geometry for a molecule with four regions of electron density?

• Linear

• Trigonal planar

• Tetrahedral

• Octahedral

In which molecule does bromine form three electron-pair bonds?

• Bromine pentafluoride

• Bromine difluoride

• Bromine monochloride

• Bromine trifluoride

What is the significance of formal charges in Lewis structures?

• To determine the molecular weight

• To identify the most stable structure

• To calculate bond angles

• To predict resonance forms

Which of the following is a characteristic of polar molecules?

• Equal bond polarities

• No lone pairs on the central atom

• Symmetrical charge distribution

• Presence of a dipole moment

What does a dipole moment indicate?

• The presence of ionic bonds

• The total number of electrons

• The molecular weight of a compound

• The separation of electric charge

Which of the following molecules is non-polar?

• NH3

• HF

• H2O

• CO2

What is the molecular geometry of NH4+?

• Linear

• Trigonal planar

• Tetrahedral

• Trigonal pyramidal

Which of the following statements about electronegativity is true?

• It measures the size of an atom

• It determines the bond length

• It indicates the ability of an atom to attract electrons

• It is the same for all elements