Electronegativity and Resonance Structures

What property describes an atom's ability to attract electrons in a chemical bond?

• Atomic mass

• Electronegativity

• Ionization energy

• Electron affinity

If the difference in electronegativity between two atoms is between 0.5 and 2.0, what type of bond is formed?

• Ionic bond

• Nonpolar covalent bond

• Polar covalent bond

• Metallic bond

In a water molecule (H2O), which atom typically has a partial negative charge?

• Hydrogen

• Oxygen

• Both Hydrogen and Oxygen

• Neither, water is nonpolar

Carbon dioxide (CO2) has polar bonds between carbon and oxygen. Why is the overall carbon dioxide molecule considered nonpolar?

• The carbon atom is more electronegative than oxygen.

• The molecule has a linear shape, and the dipoles cancel each other out.

• The molecule has a bent shape, canceling out the dipoles.

• The bonds are actually nonpolar covalent.

What is the formal charge of an oxygen atom that has one bond and three lone pairs of electrons?

• 0

• +1

• -1

• +2

What is the main difference between two resonance structures of a compound?

• The arrangement of atoms.

• The placement of lone pairs and pi bonds.

• The total number of electrons.

• The type of atoms involved.

What is a resonance hybrid?

• A single, fixed structure that represents a molecule.

• A blend of all possible resonance forms of a molecule.

• A molecule that does not exhibit resonance.

• A structure where atoms are constantly moving.

When drawing resonance structures, which type of electrons are typically moved?

• Electrons in single bonds.

• Electrons in double bonds or lone pairs.

• Electrons in the innermost shells.

• Protons and neutrons.