Molecular Geometry and Polarity Covalent Bonds Quiz

What is the molecular geometry of a molecule with 4 electron groups and 2 lone pairs?

• Tetrahedral

• Linear

• Trigonal Planar

• Bent or Angular

Explain the VSEPR theory and how it determines the molecular geometry of a molecule.

• The VSEPR theory determines the molecular geometry of a molecule by looking at the color of the compound

• The VSEPR theory determines the molecular geometry of a molecule by considering the arrangement of electron pairs around the central atom.

• The VSEPR theory determines the molecular geometry of a molecule by analyzing the mass of the compound

• The VSEPR theory determines the molecular geometry of a molecule by considering the number of isotopes present

What is the shape of a molecule with the formula AB2E2?

• Bent

• Linear

• Tetrahedral

• Octahedral

Define bond polarity and provide an example of a polar covalent bond.

• The bond between carbon and carbon in methane (CH4)

• A polar covalent bond example is the bond between hydrogen and oxygen in water (H2O).

• The bond between nitrogen and nitrogen in nitrogen gas (N2)

• The bond between sodium and chlorine in sodium chloride (NaCl)

Differentiate between nonpolar covalent bonds and polar covalent bonds.

• Nonpolar covalent bonds result in partial positive and negative charges, while polar covalent bonds have equal sharing of electrons between atoms.

• Nonpolar covalent bonds have opposite sharing of electrons between atoms, while polar covalent bonds have equal sharing of electrons resulting in partial positive and negative charges.

• Nonpolar covalent bonds have equal sharing of electrons between atoms, while polar covalent bonds have unequal sharing of electrons resulting in partial positive and negative charges.

• Nonpolar covalent bonds involve the transfer of electrons between atoms, while polar covalent bonds involve the sharing of electrons resulting in partial positive and negative charges.

Explain how electronegativity difference between atoms determines the polarity of a covalent bond.

• The size of the atoms determines the polarity of a covalent bond.

• The number of electrons in the atoms determines the polarity of a covalent bond.

• The distance between the atoms determines the polarity of a covalent bond.

• The electronegativity difference between atoms determines the polarity of a covalent bond.

Give an example of a molecule with a nonpolar covalent bond.

• Carbon dioxide (CO2)

• Water molecule (H2O)

• Oxygen molecule (O2)

• Sodium chloride (NaCl)

Describe the characteristics of a polar covalent bond and its effect on the molecule's overall polarity.

• No sharing of electrons and no effect on the molecule's polarity

• Complete transfer of electrons and formation of full charges

• Unequal sharing of electrons and creation of partial charges

• Equal sharing of electrons and no creation of partial charges