Resonance Structures

Magnetic waves create detailed images of the chest in frontal, lateral, cross-sectional, and other planes?

• computed tomography (CT) scan of the chest

• magnetic resonance imaging (MRI) of the chest

• ventilation-perfusion (V/Q) scan

• bronchoscopy

Tags

NGSS.HS-PS4-3

NGSS.HS-PS4-5

Which of the following statements is true about resonance structures?

• They are different compounds with the same molecular formula.

• They are different Lewis structures for the same molecule.

• They are the same structure with different molecular formulas.

• They are different molecules with different properties.

What is the purpose of drawing resonance structures in chemistry?

• To show the actual movement of electrons in a molecule.

• To represent the different possible shapes of a molecule.

• To illustrate the delocalization of electrons within a molecule.

• To demonstrate the different phases of a chemical reaction.

Which molecule is known to have resonance structures?

• Methane (CH4)

• Water (H2O)

• Benzene (C6H6)

• Ammonia (NH3)

In resonance structures, what remains unchanged?

• The position of atoms

• The position of electrons

• The overall charge of the molecule

• The molecular geometry

How do resonance structures affect the stability of a molecule?

• They make the molecule less stable.

• They have no effect on stability.

• They increase the stability by electron delocalization.

• They make the molecule more reactive.

Which of the following is a characteristic of resonance structures?

• They have different numbers of electrons.

• They have the same arrangement of atoms but different electron distributions.

• They have different molecular weights.

• They have different chemical properties.

What is the resonance hybrid?

• A single structure that represents the average of all resonance structures.

• The most stable resonance structure.

• The least stable resonance structure.

• A structure with the highest energy.

Which of the following compounds does not exhibit resonance?

• Ozone (O3)

• Carbonate ion (CO3^2-)

• Ethylene (C2H4)

• Nitrate ion (NO3^-)

Tags

NGSS.HS-PS1-1

What is the significance of resonance energy?

• It is the energy required to break a bond in a molecule.

• It is the energy difference between the most stable resonance structure and the resonance hybrid.

• It is the energy needed to form a resonance structure.

• It is the energy released during a chemical reaction.